frameworks/av: fix errors inside ALOGV

Fix errors exposed by adding compile-time checking to disabled ALOGVs.

Change-Id: I9602a4a485dffa3caad732c2a19ec0e41a0ac65b
diff --git a/media/libmediaplayerservice/nuplayer/mp4/MP4Source.cpp b/media/libmediaplayerservice/nuplayer/mp4/MP4Source.cpp
index d31d947..2aae4dd 100644
--- a/media/libmediaplayerservice/nuplayer/mp4/MP4Source.cpp
+++ b/media/libmediaplayerservice/nuplayer/mp4/MP4Source.cpp
@@ -86,7 +86,7 @@
             total += n;
         }
 
-        ALOGV("read %ld bytes at offset %lld", n, mPosition);
+        ALOGV("read %ld bytes at offset %lld", total, mPosition);
 
         mPosition += total;