Minor fixes for combo

Fixed wrong names for variable/function and initialized some variable.

The async function is still not working well, though. I can see the
following script as a result:

<script type="text/javascript">Mobify.combo.loadAsync('...');<br>Mobify.combo...

For some reason, there's <br> within the script.

api/combo-caching.js

@@ -311,7 +311,7 @@ var ccPublic = /^\s*public\s*$/
                 storeResource(resource);
             }
 
-            combo.dehydrateCache();
+            combo.storeCache();
         }
 
         /**
@@ -442,4 +442,4 @@ var ccPublic = /^\s*public\s*$/
         }  
     };
 
-})(Mobify);
+})(Mobify);

api/combo-client.js

@@ -83,7 +83,7 @@ var $ = Mobify.$
 
   , comboScriptAsync = $.fn.comboScriptAsync = function() {
         var $scripts = this.filter(defaults.selector).add(this.find(defaults.selector)).remove();
-        var url, urls, uncached, cached, $loaders;
+        var url, urls = [], uncached, cached, $loaders;
 
         // Collect up urls
         $scripts.filter('[' + defaults.attribute + ']').each( function() {
@@ -106,7 +106,7 @@ var $ = Mobify.$
         cached = caching.cachedUrls(urls);
         var loadCachedAsync = '';
         for(var i = 0; i < cached.length; i++) {
-            cachedScriptloaderText += defaults.loadAsyncCallback + 
+            loadCachedAsync += defaults.loadAsyncCallback + 
             "('" + cached[i] + "');\n";
         }
 
@@ -142,4 +142,4 @@ var cssHost = 'combo.mobify.com'
         return '//' + cssHost + '/css/' + JSONURIencode(object);
     };
 
-})(Mobify);
+})(Mobify);