fix testdata

java/java-tests/testData/refactoring/extractMethod/NullableCheckDontMissFinal.java

@@ -1,7 +1,7 @@
 class Test {
   void foo() {
     <selection>final String str = "";
-    if (str == "") {
+    if (str == "a") {
       return;
     }</selection>
     new Runnable() {

java/java-tests/testData/refactoring/extractMethod/NullableCheckDontMissFinal_after.java

@@ -14,7 +14,7 @@ class Test {
     @Nullable
     private String newMethod() {
         final String str = "";
-        if (str == "") {
+        if (str == "a") {
             return null;
         }
         return str;