Comment 7 for bug 910044

StacktraceTop:
 g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x762780 "media_accumulator_real_uninclude", message=0x54d02c0 "assertion failed: (self->total > 0)") at /build/buildd/glib2.0-2.30.0/./glib/gtestutils.c:1425
 g_assertion_message_expr (domain=0x0, file=0x762628 "x86_64-linux-gnu/MediaViewTracker.c", line=487, func=0x762780 "media_accumulator_real_uninclude", expr=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gtestutils.c:1436
 media_accumulator_real_uninclude (base=0x55291c0, object=<optimized out>) at x86_64-linux-gnu/MediaViewTracker.c:487
 core_tracker_include_uninclude (self=0x5b949e0, objects=<optimized out>, cb=0x521cf0 <_core_tracker_accumulator_uninclude_core_tracker_include_uninclude_object>, cb_target=0x55291c0) at x86_64-linux-gnu/core/Tracker.c:432
 g_closure_invoke (closure=0x4dc3d00, return_value=0x0, n_param_values=2, param_values=0x4dfb0a0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774