in simplifyAndCheckTypeApplication add alternative for TempQV / TempQCV,

this is used if a type synonym is expanded that creates a type application
of an existential variable,
for example :: T a b :== a (T2 b), and a is existential

frontend/expand_types.icl

@@ -28,6 +28,8 @@ simplifyAndCheckTypeApplication (TV tv) type_args
 	= (True, CV tv :@: type_args)
 simplifyAndCheckTypeApplication (TempV i) type_args
 	= (True, TempCV i :@: type_args)
+simplifyAndCheckTypeApplication (TempQV i) type_args
+	= (True, TempQCV i :@: type_args)
 simplifyAndCheckTypeApplication type type_args
 	= (False, type)