Comment 2 for bug 939196

StacktraceTop:
 __assert_fail_base (fmt=<optimized out>, assertion=0x7f9a6665d058 "(((td)->td_flags & 0x0007) == 0x0000)", file=0x7f9a6665ceb0 "/build/buildd/sip4-4.13.2/siplib/siplib.c", line=<optimized out>, function=<optimized out>) at assert.c:94
 __GI___assert_fail (assertion=0x7f9a6665d058 "(((td)->td_flags & 0x0007) == 0x0000)", file=0x7f9a6665ceb0 "/build/buildd/sip4-4.13.2/siplib/siplib.c", line=8164, function=0x7f9a6665c7f0 "sip_api_convert_from_new_type") at assert.c:103
 sip_api_convert_from_new_type (cpp=0x2cb8320, td=0x7f9a665f63b0, transferObj=0x0) at /build/buildd/sip4-4.13.2/siplib/siplib.c:8164
 meth_Poppler_LinkBrowse_url (sipSelf=<LinkBrowse at remote 0x285fb00>, sipArgs=<optimized out>) at build/temp.linux-x86_64-2.7/sippopplerqt4PopplerLinkBrowse.cpp:91
 PyEval_EvalFrameEx ()