Fix typeParametersInScope consistency query

The selection of type variables mentioned in a particular class previously didn't work as intended, so the consistency query would always pass.

Author: smowton

java/ql/consistency-queries/typeParametersInScope.ql

@@ -36,5 +36,5 @@ TypeVariable getATypeVariableInScope(RefType type) {
 
 from ClassOrInterface typeUser, TypeVariable outOfScope
 where
-  outOfScope = getAMentionedType(typeUser) and not outOfScope = getATypeVariableInScope(typeUser)
+  outOfScope = getATypeUsedInClass(typeUser) and not outOfScope = getATypeVariableInScope(typeUser)
 select "Type " + typeUser + " uses out-of-scope type variable " + outOfScope