add TODO to handle multiple line while statement for do loop

Author: YIXI ZHANG

lib/loop-protect.js

@@ -390,6 +390,7 @@ if (typeof DEBUG === 'undefined') { DEBUG = true; }
 
                 if (findwhile && line.indexOf('while') !== -1) {
                   DEBUG && debug('- exit as we found `while`: ' + line); // jshint ignore:line
+                  // TODO: handle while statement in multiple lines
                   line += '}';
                   recompiled.push(line);
                   ignore[lineNum] = true;