Comment 2 for bug 1013992

StacktraceTop:
 __libc_message (do_abort=2, fmt=0x7f6a1e9670d0 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:201
 malloc_printerr (action=3, str=0x7f6a1e967230 "double free or corruption (out)", ptr=<optimized out>) at malloc.c:5007
 ev_document_factory_add_filters () from /tmp/tmp0eFOv5/usr/lib/libevdocument3.so.4
 ev_window_cmd_save_as ()
 g_closure_invoke (closure=0x7f6a24030b80, return_value=0x0, n_param_values=1, param_values=0x7ffff91c4c20, invocation_hint=0x7ffff91c4bc0) at /build/buildd/glib2.0-2.33.1/./gobject/gclosure.c:777