Fix a Gecko CSS loading bug in the minified JS caused by an unwanted …

…Closure Compiler optimization. [Allex Wang]

HISTORY

@@ -1,7 +1,10 @@
 LazyLoad Changelog
 ================================================================================
 
-Version 2.0.3 (git)
+Version 2.0.3 (2011-07-05)
+  * Fixed a bug caused by an unwanted Closure Compiler optimization that broke
+    CSS load completion detection in Gecko when using the minified version of
+    LazyLoad. [Allex Wang]
   * Fixed a race condition in which a URL could be removed from the "pending"
     queue if it finished loading before other URLs in the same batch had been
     added to the queue, resulting in the queue's length changing unexpectedly

lazyload.js

@@ -277,8 +277,13 @@ LazyLoad = (function (doc) {
   @private
   */
   function pollGecko(node) {
+    var hasRules;
+
     try {
-      node.sheet.cssRules;
+      // We don't really need to store this value or ever refer to it again, but
+      // if we don't store it, Closure Compiler assumes the code is useless and
+      // removes it.
+      hasRules = !!node.sheet.cssRules;
     } catch (ex) {
       // An exception means the stylesheet is still loading.
       pollCount += 1;
@@ -289,7 +294,7 @@ LazyLoad = (function (doc) {
         // We've been polling for 10 seconds and nothing's happened. Stop
         // polling and finish the pending requests to avoid blocking further
         // requests.
-        finish('css');
+        hasRules && finish('css');
       }
 
       return;