Fixes smallrye#322 by reverting internHashCode()

Signed-off-by: Patrick Reinhart <[email protected]>

core/src/main/java/org/jboss/jandex/TypeVariableReference.java

@@ -155,6 +155,6 @@ boolean internEquals(Object o) {
     @Override
     int internHashCode() {
         // must produce predictable hash code (for reproducibility) consistent with `internEquals`
-        return name.hashCode();
+        return System.identityHashCode(this);
     }
 }