Ensure that calls for traces with a single frame are shown.
Ensure that calls for traces with a single frame are shown.

Otherwise we get a solitary "Frame 0" node without children.

schulmar/apitrace,swq0553/apitrace,PeterLValve/apitrace,schulmar/apitrace,tuanthng/apitrace,joshua5201/apitrace,tuanthng/apitrace,EoD/apitrace,surround-io/apitrace,EoD/apitrace,tuanthng/apitrace,schulmar/apitrace,schulmar/apitrace,EoD/apitrace,trtt/apitrace,surround-io/apitrace,swq0553/apitrace,trtt/apitrace,surround-io/apitrace,swq0553/apitrace,swq0553/apitrace,tuanthng/apitrace,joshua5201/apitrace,joshua5201/apitrace,tuanthng/apitrace,surround-io/apitrace,PeterLValve/apitrace,PeterLValve/apitrace,surround-io/apitrace,PeterLValve/apitrace,joshua5201/apitrace,EoD/apitrace,trtt/apitrace,EoD/apitrace,apitrace/apitrace,apitrace/apitrace,trtt/apitrace,trtt/apitrace,schulmar/apitrace,apitrace/apitrace,swq0553/apitrace,joshua5201/apitrace,apitrace/apitrace