Comment 2 for bug 1220299

StacktraceTop:
 node_get_pos (node=0x7fdb0c018ad0) at /build/buildd/glib2.0-2.37.6/./glib/gsequence.c:1677
 ffi_call_unix64 () at ../src/x86/unix64.S:76
 ffi_call (cif=cif@entry=0x7fdb127736f0, fn=fn@entry=0x7fdb1874dd20 <dee_model_find_sorted+272>, rvalue=rvalue@entry=0x7fdb127736d0, avalue=avalue@entry=0x7fdb12773610) at ../src/x86/ffi64.c:522
 g_callable_info_invoke (info=info@entry=0x107f940, function=0x7fdb1874dd20 <dee_model_find_sorted+272>, in_args=in_args@entry=0x7fdafc002030, n_in_args=n_in_args@entry=2, out_args=out_args@entry=0x0, n_out_args=n_out_args@entry=0, return_value=return_value@entry=0x7fdb127738c8, is_method=is_method@entry=1, throws=0, error=error@entry=0x7fdb12773878) at girepository/gicallableinfo.c:680
 g_function_info_invoke (info=info@entry=0x107f940, in_args=0x7fdafc002030, n_in_args=2, out_args=0x0, n_out_args=0, return_value=return_value@entry=0x7fdb127738c8, error=error@entry=0x7fdb12773878) at girepository/gifunctioninfo.c:274