Comment 2 for bug 1011377

StacktraceTop:
 g_assertion_message (domain=0x0, file=0xb6b5f8d0 "arraylist.c", line=545, func=0xb6b5fb18 "gee_array_list_real_set", message=<optimized out>) at /build/buildd/glib2.0-2.32.3/./glib/gtestutils.c:1856
 g_assertion_message_expr (domain=0x0, file=0xb6b5f8d0 "arraylist.c", line=545, func=0xb6b5fb18 "gee_array_list_real_set", expr=0xb6b5f8c4 "_tmp0_ >= 0") at /build/buildd/glib2.0-2.32.3/./glib/gtestutils.c:1871
 gee_array_list_real_set (base=0x9faa5e8, index=-1, item=0xa2676a0) at arraylist.c:545
 gee_abstract_list_set (self=0x9faa5e8, index=-1, item=0xa2676a0) at abstractlist.c:333
 contacts_store_remove (self=0xa00cea0, c=0xa430818) at contacts-store.c:1268