do not migrate from type to self

java/java-impl/src/com/intellij/codeInsight/daemon/impl/quickfix/VariableTypeFromCallFix.java

@@ -97,17 +97,20 @@ public class VariableTypeFromCallFix implements IntentionAction {
       }
       final PsiElement resolved = ((PsiReferenceExpression)qualifierExpression).resolve();
       if (resolved instanceof PsiVariable) {
-        final PsiClass varClass = PsiUtil.resolveClassInType(((PsiVariable)resolved).getType());
+        final PsiType varType = ((PsiVariable)resolved).getType();
+        final PsiClass varClass = PsiUtil.resolveClassInType(varType);
         final PsiResolveHelper resolveHelper = JavaPsiFacade.getInstance(expression.getProject()).getResolveHelper();
         if (varClass != null) {
           final PsiSubstitutor psiSubstitutor = resolveHelper.inferTypeArguments(varClass.getTypeParameters(),
                                                                        parameters,
                                                                        expressions, PsiSubstitutor.EMPTY, resolved, false);
           final PsiClassType appropriateVarType = JavaPsiFacade.getElementFactory(expression.getProject()).createType(varClass, psiSubstitutor);
-          QuickFixAction.registerQuickFixAction(highlightInfo, new VariableTypeFromCallFix(appropriateVarType, (PsiVariable) resolved));
+          if (!varType.equals(appropriateVarType)) {
+            QuickFixAction.registerQuickFixAction(highlightInfo, new VariableTypeFromCallFix(appropriateVarType, (PsiVariable) resolved));
+          }
           break;
         }
       }
     }
   }
-}
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/varTypeFromCall/beforeChangeSignatureAvailable.java

@@ -0,0 +1,11 @@
+// "Change 'var' type to 'Foo" "false"
+public class Test {
+  void foo()  {
+    final Foo var = new Foo();
+    var.foo("", 6<caret>6);
+  }
+}
+
+class Foo {
+  void foo(String str, String str1){}
+}