generator: avoid double lookup in dictionary when DeAlias is called
generator: avoid double lookup in dictionary when DeAlias is called

We can avoid a double lookup in the types dictionary here because the
method TryGetValue() was just called before.

akrisiun/gtk-sharp,openmedicus/gtk-sharp,antoniusriha/gtk-sharp,openmedicus/gtk-sharp,antoniusriha/gtk-sharp,openmedicus/gtk-sharp,sillsdev/gtk-sharp,Gankov/gtk-sharp,orion75/gtk-sharp,Gankov/gtk-sharp,akrisiun/gtk-sharp,antoniusriha/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,antoniusriha/gtk-sharp,akrisiun/gtk-sharp,orion75/gtk-sharp,antoniusriha/gtk-sharp,orion75/gtk-sharp,sillsdev/gtk-sharp,akrisiun/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,Gankov/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,Gankov/gtk-sharp,Gankov/gtk-sharp,orion75/gtk-sharp,akrisiun/gtk-sharp,orion75/gtk-sharp,Gankov/gtk-sharp