Comment 2 for bug 1017469

StacktraceTop:
 param_spec_pool_equals (key_spec_1=<optimized out>, key_spec_2=<optimized out>) at /build/buildd/glib2.0-2.33.2/./gobject/gparam.c:876
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x7fff9041be90, hash_table=0x61a920) at /build/buildd/glib2.0-2.33.2/./glib/ghash.c:422
 g_hash_table_lookup (hash_table=hash_table@entry=0x61a920, key=key@entry=0x7fff9041be90) at /build/buildd/glib2.0-2.33.2/./glib/ghash.c:1074
 param_spec_ht_lookup (walk_ancestors=1, owner_type=139913995534368, param_name=0x7f40517567e3 "data", hash_table=0x61a920) at /build/buildd/glib2.0-2.33.2/./gobject/gparam.c:984
 g_param_spec_pool_lookup (pool=0x620950, param_name=param_name@entry=0x7f40517567e3 "data", owner_type=owner_type@entry=139913995534368, walk_ancestors=walk_ancestors@entry=1) at /build/buildd/glib2.0-2.33.2/./gobject/gparam.c:1060