Comment 2 for bug 951273

StacktraceTop:
 pa_idxset_string_hash_func (p=0x0) at pulsecore/idxset.c:67
 pa_hashmap_get (h=0xe6ef40, key=0x0) at pulsecore/hashmap.c:179
 pa_sink_set_port (s=0xe62800, name=0x0, save=true) at pulsecore/sink.c:3092
 command_set_sink_or_source_port (pd=<optimized out>, command=96, tag=54, t=0xe7fb90, userdata=0xe79b00) at pulsecore/protocol-native.c:4680
 pa_pdispatch_run (pd=0xda9150, packet=<optimized out>, creds=0xdfe310, userdata=0xe79b00) at pulsecore/pdispatch.c:336