Issue #1257: Fixed NPE in FinalLocalVariableCheck

src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java

@@ -282,6 +282,7 @@ public class FinalLocalVariableCheck extends Check {
         DetailAST astTraverse = ast;
         while (!(astTraverse.getType() == TokenTypes.METHOD_DEF
                 || astTraverse.getType() == TokenTypes.CLASS_DEF
+                || astTraverse.getType() == TokenTypes.ENUM_DEF
                 || astTraverse.getType() == TokenTypes.CTOR_DEF)) {
             astTraverse = astTraverse.getParent();
         }

src/test/resources/com/puppycrawl/tools/checkstyle/coding/InputFinalLocalVariable.java

@@ -171,3 +171,11 @@ class A {
     }
 }
 
+enum Enum1 {
+    ;
+
+    {
+        int var = 0;
+        var = 1;
+    }
+}