SplitConditionUtil#createAndAnd: fix corner cases with ending line comment

Review ID: IDEA-CR-31527

java/java-tests/testData/codeInsight/splitIfAction/afterCommentBeforeElse.java

@@ -0,0 +1,12 @@
+class C {
+    void foo() {
+        if (a) {
+            if (b) {
+                call();
+            } // foo
+            else if (c) {
+                otherCall();
+            } // bar
+        }
+    }
+}