print warning if offset != buffer size

Bug: 17110981
Change-Id: Iacceca203372f4c06ff5ef7ce98edd5554727b64
diff --git a/media/libstagefright/rtsp/AMPEG4ElementaryAssembler.cpp b/media/libstagefright/rtsp/AMPEG4ElementaryAssembler.cpp
index 76f8f54..7eb6542 100644
--- a/media/libstagefright/rtsp/AMPEG4ElementaryAssembler.cpp
+++ b/media/libstagefright/rtsp/AMPEG4ElementaryAssembler.cpp
@@ -358,6 +358,11 @@
             CopyTimes(accessUnit, buffer);
             mPackets.push_back(accessUnit);
         }
+
+        if (offset != buffer->size()) {
+            ALOGW("potentially malformed packet (offset %d, size %d)",
+                    offset, buffer->size());
+        }
     }
 
     queue->erase(queue->begin());