Comment 2 for bug 903450

StacktraceTop:
 os_bar_init (bar=0x173b0e0) at /build/buildd/overlay-scrollbar-0.2.13/./os/os-bar.c:349
 g_list_append (list=0x7f6a02d98154, data=0x2) at /build/buildd/glib2.0-2.31.2/./glib/glist.c:234
 write () at ../sysdeps/unix/syscall-template.S:82
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x20, hash_table=0x40000002) at /build/buildd/glib2.0-2.31.2/./glib/ghash.c:385
 g_hash_table_lookup (hash_table=0x40000002, key=0x20) at /build/buildd/glib2.0-2.31.2/./glib/ghash.c:1058