Bug 662164 - Use fast iteration in nsFilePicker.mm. r=joshmoz

widget/src/cocoa/nsFilePicker.mm

@@ -402,12 +402,9 @@ nsFilePicker::GetLocalFiles(const nsString& inTitle, PRBool inAllowMultiple, nsC
   // Converts data from a NSArray of NSURL to the returned format.
   // We should be careful to not call [thePanel URLs] more than once given that
   // it creates a new array each time.
-  // TODO: we should use Fast Enumeration as soon as Obj-C 2.0 is allowed in
-  // our code.
-  NSArray* urls = [thePanel URLs];
-
-  for (unsigned int i = 0; i < [urls count]; ++i) {
-    NSURL* url = [urls objectAtIndex:i];
+  // We are using Fast Enumeration, thus the NSURL array is created once then
+  // iterated.
+  for (NSURL* url in [thePanel URLs]) {
     if (!url) {
       continue;
     }