Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

ipc/ipc_sync_message_filter.cc

Index: ipc/ipc_sync_message_filter.cc
diff --git a/ipc/ipc_sync_message_filter.cc b/ipc/ipc_sync_message_filter.cc
index 541d6852ad1fbdbc4a09567ccb02cfea4cd7303e..a534c4459160224800913238b982daa003085663 100644
--- a/ipc/ipc_sync_message_filter.cc
+++ b/ipc/ipc_sync_message_filter.cc
@@ -46,8 +46,8 @@ bool SyncMessageFilter::Send(Message* message) {
     base::AutoLock auto_lock(lock_);
     // Can't use this class on the main thread or else it can lead to deadlocks.
     // Also by definition, can't use this on IO thread since we're blocking it.
-    DCHECK(MessageLoopProxy::current() != listener_loop_.get());
-    DCHECK(MessageLoopProxy::current() != io_loop_.get());
+    DCHECK(MessageLoopProxy::current().get() != listener_loop_.get());
+    DCHECK(MessageLoopProxy::current().get() != io_loop_.get());
     pending_sync_messages_.insert(&pending_message);
   }