Merge pull request #64036 from xedin/rdar-106054263

[CSSimplify] Detect and diagnose generic argument mismatches individually

lib/Sema/ConstraintSystem.cpp

@@ -5393,6 +5393,7 @@ void constraints::simplifyLocator(ASTNode &anchor,
       continue;
 
    case ConstraintLocator::TupleType:
+   case ConstraintLocator::GenericType:
       path = path.slice(1);
       continue;