Fix minor bug in options.js

The 'ccdragndropfix' case in a switch didn't have a break statement at
the end.

Change-Id: I5373d8f18308ff9a353f6a0252342585e9c11d25
diff --git a/src/options.js b/src/options.js
index 742be12..46913d4 100644
--- a/src/options.js
+++ b/src/options.js
@@ -124,6 +124,7 @@
               if (items[opt] === true)
                 document.getElementById(opt).checked = true;
             }
+            break;
 
           default:
             console.warn('Unrecognized option: ' + opt);