Cast read size to signed before the substraction.

Close #11481

diff --git a/modules/audio_output/directsound.c b/modules/audio_output/directsound.c
index 8ec0fd665ecc35bc3b5d06cce2f0a8764853355e..7db4458383ed0abafbae95e61fd2586f5058e662 100644 (file)
--- a/modules/audio_output/directsound.c
+++ b/modules/audio_output/directsound.c
@@ -155,7 +155,7 @@ static HRESULT TimeGet( aout_stream_sys_t *sys, mtime_t *delay )
     if( hr != DS_OK )
         return hr;
 
-    size = read - sys->i_last_read;
+    size = (mtime_t)read - sys->i_last_read;
 
     /* GetCurrentPosition cannot be trusted if the return doesn't change
      * Just return an error */