Fix retracing of wglShareLists for currently bound contexts.
Fix retracing of wglShareLists for currently bound contexts.

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