Fix tree bustage

mac/linux didn't like unused local varible.

tbr=erikkay
Review URL: http://codereview.chromium.org/43096

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11474 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/message_loop.cc b/base/message_loop.cc
index 3f216dc9..fef99e2f 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -373,11 +373,13 @@
   }
   did_work |= !deferred_non_nestable_work_queue_.empty();
   while (!deferred_non_nestable_work_queue_.empty()) {
-    Task* task = deferred_non_nestable_work_queue_.front().task;
-    deferred_non_nestable_work_queue_.pop();
     // TODO(darin): Delete all tasks once it is safe to do so.
     // Until it is totaly safe, just delete them to keep purify happy.
 #ifdef PURIFY
+    Task* task = deferred_non_nestable_work_queue_.front().task;
+#endif
+    deferred_non_nestable_work_queue_.pop();
+#ifdef PURIFY
     delete task;
 #endif
   }