Merge lp:~vanvugt/compiz/fix-1075048 into lp:compiz/0.9.9

[Daniel van Vugt]

Fix warning/error about an unused expression, which breaks the build when
using clang (LP: #1075048)

[PS Jenkins bot (ps-jenkins)]

PASSED: Continuous integration, rev:3448
http://jenkins.qa.ubuntu.com/job/compiz-ci/230/
Executed test runs:
    SUCCESS: http://jenkins.qa.ubuntu.com/job/compiz-ci/./build=pbuilder,distribution=quantal,flavor=amd64/230/console

review: Approve (continuous-integration)

[Sam Spilsbury (smspillaz)]

review: Approve

=== modified file 'compizconfig/libcompizconfig/tests/compizconfig_test_ccs_object.cpp'
--- compizconfig/libcompizconfig/tests/compizconfig_test_ccs_object.cpp	2012-10-26 11:53:45 +0000
+++ compizconfig/libcompizconfig/tests/compizconfig_test_ccs_object.cpp	2012-11-05 07:05:22 +0000
@@ -119,10 +119,13 @@
 
     ccsObjectInit (to, &ccsDefaultObjectAllocator);
     ccsObjectAddInterface (to, reinterpret_cast <const CCSInterface *> (&SomeDummyInterface), CCS_INTERFACE_TYPE_DUMMY);
+
+    Dummy2Interface *i = NULL;
     ASSERT_DEATH ({
-		      GET_INTERFACE (Dummy2Interface, to);
+		      i = GET_INTERFACE (Dummy2Interface, to);
 		  },
 		  "Unable to find interface type*");
+    EXPECT_EQ (NULL, i);  // Avoid warnings/errors about i being unused.
 
     ccsObjectRemoveInterface (to, CCS_INTERFACE_TYPE_DUMMY);
     free (to);