Overlay: fix OS X pid comparison.
Overlay: fix OS X pid comparison.

Cast our queried pid to quint64 before
comparing.

SuperNascher/mumble,Lartza/mumble,feld/mumble,austinliou/mumble,feld/mumble,SuperNascher/mumble,unascribed/mumble,SuperNascher/mumble,SuperNascher/mumble,Lartza/mumble,unascribed/mumble,SuperNascher/mumble,unascribed/mumble,LuAPi/mumble,LuAPi/mumble,LuAPi/mumble,austinliou/mumble,feld/mumble,feld/mumble,unascribed/mumble,Lartza/mumble,Lartza/mumble,feld/mumble,feld/mumble,unascribed/mumble,Lartza/mumble,LuAPi/mumble,LuAPi/mumble,Lartza/mumble,LuAPi/mumble,unascribed/mumble,SuperNascher/mumble,austinliou/mumble,Lartza/mumble,unascribed/mumble,Lartza/mumble,LuAPi/mumble,feld/mumble,feld/mumble,austinliou/mumble,austinliou/mumble,SuperNascher/mumble,LuAPi/mumble,SuperNascher/mumble,SuperNascher/mumble,LuAPi/mumble,austinliou/mumble,austinliou/mumble,unascribed/mumble,austinliou/mumble