SurfaceFlinger: fix releaseBuffer in updateTexImage

Allow releasing a buffer acquired in the past.

Change-Id: I3f27f1caec109c1a47286fc4d2235c6e1afe9022
Signed-off-by: Lajos Molnar <lajos@google.com>
Bug: 9516405
diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.cpp b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
index 6912dc0..7ac5c60 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.cpp
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
@@ -69,7 +69,7 @@
     // reject buffers which have the wrong size
     int buf = item.mBuf;
     if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) {
-        releaseBufferLocked(buf, item.mGraphicBuffer, EGL_NO_SYNC_KHR);
+        releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer, EGL_NO_SYNC_KHR);
         return NO_ERROR;
     }