release new version

Author: tranleduy2000

app/src/main/java/com/duy/pascal/interperter/ast/expressioncontext/HierarchicalExpressionContext.java

@@ -110,11 +110,10 @@ public void put(Class<?> clazz, DiagnosticCollector object) {
 
     @Nullable
     public <T> T getListener(Class<T> c) {
-//        try {
-//            return (T) parsingListener.get(c);
-//        } catch (Exception e) {
-//            return null;
-//        }
-        return null;
+        try {
+            return (T) parsingListener.get(c);
+        } catch (Exception e) {
+            return null;
+        }
     }
 }