invert if: do not skip returns as they may contain valuable info (IDEA-61892)

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

@@ -0,0 +1,10 @@
+// "Invert If Condition" "true"
+class Test {
+    public static int create() {
+        if (true) {
+            return;
+        }
+        return "s";
+
+    }
+}

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

@@ -0,0 +1,9 @@
+// "Invert If Condition" "true"
+class Test {
+    public static int create() {
+        if (!tr<caret>ue) {
+            return "s";
+        }
+
+    }
+}