Fix build -- update for function signature change

Change-Id: I9c2448d5853c69ec7e962847fdaba9a99906cc42
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index 90bfce7..a324e94 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -302,7 +302,7 @@
         // slot and fence as we just queued.
         Mutex::Autolock lock(mMutex);
         BufferQueue::BufferItem item;
-        result = acquireBufferLocked(&item);
+        result = acquireBufferLocked(&item, 0);
         if (result != NO_ERROR)
             return result;
         VDS_LOGW_IF(item.mBuf != sslot,