Fix loop protect thinking default cases are loop labels

gulpfile.js

@@ -40,7 +40,7 @@ var Rx = require('rx'),
   // lint
   jsonlint = require('gulp-jsonlint'),
   eslint = require('gulp-eslint'),
-  
+
   // unit-tests
   tape = require('gulp-tape'),
   tapSpec = require('tap-spec');
@@ -517,7 +517,7 @@ gulp.task('reload', function() {
 
 gulp.task('watch', watchDependents, function() {
   gulp.watch(paths.lessFiles, ['less']);
-  gulp.watch(paths.js, ['js']);
+  gulp.watch(paths.js.concat(paths.vendorChallenges), ['js']);
   gulp.watch(paths.challenges, ['test-challenges', 'reload']);
   gulp.watch(paths.js, ['js', 'dependents']);
   gulp.watch(

public/js/lib/loop-protect/loop-protect.js

@@ -18,7 +18,7 @@ if (typeof DEBUG === 'undefined') { DEBUG = true; }
   // the standard loops - note that recursive is not supported
   var re = /\b(for|while|do)\b/g;
   var reSingle = /\b(for|while|do)\b/;
-  var labelRe = /\b([a-z_]{1}\w+:)/i;
+  var labelRe = /\b(?!default:)([a-z_]{1}\w+:)/i;
   var comments = /(?:\/\*(?:[\s\S]*?)\*\/)|(?:([\s;])+\/\/(?:.*)$)/gm;
   var loopTimeout = 1000;
 
@@ -131,7 +131,7 @@ if (typeof DEBUG === 'undefined') { DEBUG = true; }
       // so that we insert in to the correct location (instead of possibly
       // outside the logic
       return line.slice(0, matchPosition) + ';' + method + '({ line: ' + lineNum + ', reset: true }); ' + line.slice(matchPosition);
-    };
+    }
 
     if (!offset) {
       offset = 0;