Comment 2 for bug 755521

StacktraceTop:
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 g_logv (log_domain=0x7f1738e2fa48 "GThread", log_level=<value optimized out>, format=0x7f1738e2fdd0 "file %s: line %d (%s): error '%s' during '%s'", args1=0x7fff0a5cbcb0) at /build/buildd/glib2.0-2.28.5/./glib/gmessages.c:557
 g_log (log_domain=<value optimized out>, log_level=<value optimized out>, format=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./glib/gmessages.c:577
 g_mutex_free_posix_impl (mutex=0x7f1730ea6d00) at /build/buildd/glib2.0-2.28.5/./gthread/gthread-posix.c:171