InvertIfConditionAction: better comment handling

java/java-tests/testData/codeInsight/invertIfCondition/beforeContinueWithCommentNoBlock.java

@@ -0,0 +1,9 @@
+// "Invert 'if' condition" "true"
+class A {
+    void f(){
+        while (true) {
+            i<caret>f (true) continue;//comment
+            System.out.println();
+        }
+    }
+}