am e577e87a: Fix a typo in NuCachedSource2 that would trigger an assert near the end of a stream.

Merge commit 'e577e87a2d80890190f14edc4a5caf70d7c566bf' into gingerbread-plus-aosp

* commit 'e577e87a2d80890190f14edc4a5caf70d7c566bf':
  Fix a typo in NuCachedSource2 that would trigger an assert near the end of a stream.

media/libstagefright/NuCachedSource2.cpp

@@ -416,7 +416,7 @@ ssize_t NuCachedSource2::readInternal(off_t offset, void *data, size_t size) {
             return mFinalStatus;
         }
 
-        size_t avail = mCache->totalSize() - offset;
+        size_t avail = mCache->totalSize() - delta;
         mCache->copy(delta, data, avail);
 
         return avail;