Lift return out fix: do not suggest for labeled returns

idea/src/org/jetbrains/kotlin/idea/intentions/branchedTransformations/BranchedFoldingUtils.kt

@@ -45,7 +45,9 @@ object BranchedFoldingUtils {
 
     fun getFoldableBranchedReturn(branch: KtExpression?): KtReturnExpression? =
             (branch?.lastBlockStatementOrThis() as? KtReturnExpression)?.takeIf {
-                it.returnedExpression != null && it.returnedExpression !is KtLambdaExpression
+                it.returnedExpression != null &&
+                it.returnedExpression !is KtLambdaExpression &&
+                it.getTargetLabel() == null
             }
 
     fun checkAssignmentsMatch(a1: KtBinaryExpression, a2: KtBinaryExpression): Boolean =

idea/testData/inspectionsLocal/liftOut/whenToReturn/localReturns.kt

@@ -0,0 +1,13 @@
+// PROBLEM: none
+// WITH_RUNTIME
+
+fun test(arg: String?): Int {
+    arg?.let {
+        <caret>when (arg) {
+            "" -> return 1
+            else -> return@let 42
+        }
+        42
+    }
+    return 0
+}

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -712,6 +712,12 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("localReturns.kt")
+            public void testLocalReturns() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/inspectionsLocal/liftOut/whenToReturn/localReturns.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("otherReturns.kt")
             public void testOtherReturns() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/inspectionsLocal/liftOut/whenToReturn/otherReturns.kt");