Increase buffer allocated to receive HTTP response, YouTube is rather verbose...

Yes, I know, fixed buffers are bad.
diff --git a/media/libstagefright/HTTPStream.cpp b/media/libstagefright/HTTPStream.cpp
index 098ddbd..6af7df9 100644
--- a/media/libstagefright/HTTPStream.cpp
+++ b/media/libstagefright/HTTPStream.cpp
@@ -174,7 +174,7 @@
     *http_status = -1;
     mHeaders.clear();
 
-    char line[256];
+    char line[1024];
     status_t err = receive_line(line, sizeof(line));
     if (err != OK) {
         return err;