Fix security vulneratibly 31960359 am: dffa078205 am: b8b076e553
am: 46dd3c89e5

Change-Id: I7664021716dc9f1a1e09afdbeb04a02f84195354
diff --git a/libs/gui/BufferQueueCore.cpp b/libs/gui/BufferQueueCore.cpp
index fd85c43..c4714e3 100644
--- a/libs/gui/BufferQueueCore.cpp
+++ b/libs/gui/BufferQueueCore.cpp
@@ -90,6 +90,7 @@
     mSharedBufferSlot(INVALID_BUFFER_SLOT),
     mSharedBufferCache(Rect::INVALID_RECT, 0, NATIVE_WINDOW_SCALING_MODE_FREEZE,
             HAL_DATASPACE_UNKNOWN),
+    mLastQueuedSlot(INVALID_BUFFER_SLOT),
     mUniqueId(getUniqueId())
 {
     if (allocator == NULL) {