Some cleanup of OMXCodec code, make sure to ignore 0-length output buffers in the metadata retriever.
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp
index 264271d..d692820 100644
--- a/media/libstagefright/OMXCodec.cpp
+++ b/media/libstagefright/OMXCodec.cpp
@@ -1065,8 +1065,8 @@
         return false;
     }
 
-    if (from.get() == NULL && to.get() != NULL
-        || from.get() != NULL && to.get() == NULL) {
+    if ((from.get() == NULL && to.get() != NULL)
+        || (from.get() != NULL && to.get() == NULL)) {
         return true;
     }