ubuntu-bug argument issue with complete path to .crash file

This command shows an error, it can't handle the file with full path correctly. I'll attach a fix for this.

$ ubuntu-bug /var/crash/_usr_bin_totem.1000.crash

$ sudo strace ubuntu-bug /var/crash/_usr_bin_totem.1000.crash
execve("/usr/bin/ubuntu-bug", ["ubuntu-bug", "/var/crash/_usr_bin_totem.1000.c"...], [/* 16 vars */]) = 0
brk(0) = 0x8d3b000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb801e000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=74485, ...}) = 0
mmap2(NULL, 74485, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb800b000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260l\1\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1397188, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb800a000
mmap2(NULL, 1407336, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xcff000
mprotect(0xe50000, 4096, PROT_NONE) = 0
mmap2(0xe51000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x151) = 0xe51000
mmap2(0xe54000, 10600, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xe54000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb8009000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb80096c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xe51000, 8192, PROT_READ) = 0
mprotect(0x805e000, 4096, PROT_READ) = 0
mprotect(0x8f1000, 4096, PROT_READ) = 0
munmap(0xb800b000, 74485) = 0
getpid() = 18934
rt_sigaction(SIGCHLD, {SIG_DFL, [CHLD], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
geteuid32() = 0
brk(0) = 0x8d3b000
brk(0x8d5c000) = 0x8d5c000
getppid() = 18933
getcwd("/home/kmos", 4096) = 11
open("/usr/bin/ubuntu-bug", O_RDONLY) = 3
fcntl64(3, F_DUPFD, 10) = 10
close(3) = 0
fcntl64(10, F_SETFD, FD_CLOEXEC) = 0
rt_sigaction(SIGINT, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGINT, {0x805606b, ~[RTMIN RT_1], 0}, NULL, 8) = 0
rt_sigaction(SIGQUIT, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGQUIT, {SIG_DFL, ~[RTMIN RT_1], 0}, NULL, 8) = 0
rt_sigaction(SIGTERM, NULL, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGTERM, {SIG_DFL, ~[RTMIN RT_1], 0}, NULL, 8) = 0
read(10, "#!/bin/sh -e\n\n# filter out -p an"..., 8192) = 2020
open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 3
fcntl64(2, F_DUPFD, 10) = 11
close(2) = 0
fcntl64(11, F_SETFD, FD_CLOEXEC) = 0
dup2(3, 2) = 2
close(3) = 0
write(2, "test: 37: ", 10) = 10
write(2, "Illegal number: /var/crash/_usr_"..., 52) = 52
write(2, "\n", 1) = 1
dup2(11, 2) = 2
close(11) = 0
pipe([3, 4]) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb8009728) = 18935
--- SIGCHLD (Child exited) @ 0 (0) ---
close(4) = 0
read(3, "0\n", 128) = 2
read(3, "", 128) = 0
close(3) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 18935
open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 3
fcntl64(1, F_DUPFD, 10) = 11
close(1) = 0
fcntl64(11, F_SETFD, FD_CLOEXEC) = 0
dup2(3, 1) = 1
close(3) = 0
stat64("/usr/local/sbin/pgrep", 0xbfe27850) = -1 ENOENT (No such file or directory)
stat64("/usr/local/bin/pgrep", 0xbfe27850) = -1 ENOENT (No such file or directory)
stat64("/usr/sbin/pgrep", 0xbfe27850) = -1 ENOENT (No such file or directory)
stat64("/usr/bin/pgrep", {st_mode=S_IFREG|0755, st_size=18012, ...}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb8009728) = 18936
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 18936
dup2(11, 1) = 1
close(11) = 0
pipe([3, 4]) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb8009728) = 18937
--- SIGCHLD (Child exited) @ 0 (0) ---
close(4) = 0
read(3, "0\n", 128) = 2
read(3, "", 128) = 0
close(3) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 18937
open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 3
fcntl64(1, F_DUPFD, 10) = 11
close(1) = 0
fcntl64(11, F_SETFD, FD_CLOEXEC) = 0
dup2(3, 1) = 1
close(3) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb8009728) = 18938
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 18938
dup2(11, 1) = 1
close(11) = 0
stat64("/usr/share/apport/apport-gtk", {st_mode=S_IFREG|0755, st_size=12946, ...}) = 0
geteuid32() = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb8009728) = 18939
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 18939
--- SIGCHLD (Child exited) @ 0 (0) ---
read(10, "", 8192) = 0
exit_group(0) = ?