KT-11805 Invert if-condition intention breaks code in case of end of line comment

#KT-11805 Fixed

idea/src/org/jetbrains/kotlin/idea/intentions/InvertIfConditionIntention.kt

@@ -117,7 +117,7 @@ class InvertIfConditionIntention : SelfTargetingIntention<KtIfExpression>(KtIfEx
                         }
 
                         //TODO: no block if single?
-                        val newIf = factory.createExpressionByPattern("if ($0) { $1 }", newCondition, newIfBodyText)
+                        val newIf = factory.createExpressionByPattern("if ($0) { $1\n}", newCondition, newIfBodyText) // we need to insert '\n' because the text can end with an end-of-line comment
                         return updatedIf.replace(newIf) as KtIfExpression
                     }
                 }

idea/testData/intentions/invertIfCondition/endOfLineCommentBug.kt

@@ -0,0 +1,4 @@
+fun foo(p: String?): Int? {
+    <caret>if (p == null) return null
+    return p.hashCode() // comment
+}

idea/testData/intentions/invertIfCondition/endOfLineCommentBug.kt.after

@@ -0,0 +1,6 @@
+fun foo(p: String?): Int? {
+    <caret>if (p != null) {
+        return p.hashCode() // comment
+    }
+    return null
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -6105,6 +6105,12 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             doTest(fileName);
         }
 
+        @TestMetadata("endOfLineCommentBug.kt")
+        public void testEndOfLineCommentBug() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/invertIfCondition/endOfLineCommentBug.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("forLoopWithMultipleExpressions.kt")
         public void testForLoopWithMultipleExpressions() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/invertIfCondition/forLoopWithMultipleExpressions.kt");