Return correct error code from IMediaHttpConnection

It returns a boolean, not a status_t

Bug: 21654826
Change-Id: Id364a90598c5cf0bb567b5b25bbc9b7c73412760
diff --git a/media/libmedia/IMediaHTTPConnection.cpp b/media/libmedia/IMediaHTTPConnection.cpp
index 09137ef..7e89d7f 100644
--- a/media/libmedia/IMediaHTTPConnection.cpp
+++ b/media/libmedia/IMediaHTTPConnection.cpp
@@ -70,7 +70,7 @@
         int32_t exceptionCode = reply.readExceptionCode();
 
         if (exceptionCode) {
-            return UNKNOWN_ERROR;
+            return false;
         }
 
         sp<IBinder> binder = reply.readStrongBinder();