[FFmpeg-cvslog] dvdsubdec: use unsigned shifts to avoid shifting into the sign bit

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Jan 12 21:38:19 2013 +0100| [754dd7e8895543d71b4184c3180d39c0ed735f3a] | committer: Michael Niedermayer

dvdsubdec: use unsigned shifts to avoid shifting into the sign bit

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=754dd7e8895543d71b4184c3180d39c0ed735f3a
---

 libavcodec/dvdsubdec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dvdsubdec.c b/libavcodec/dvdsubdec.c
index cc9e11b..700655d 100644
--- a/libavcodec/dvdsubdec.c
+++ b/libavcodec/dvdsubdec.c
@@ -146,7 +146,7 @@ static void guess_palette(uint32_t *rgba_palette,
     if(ctx->has_palette) {
         for(i = 0; i < 4; i++)
             rgba_palette[i] = (ctx->palette[colormap[i]] & 0x00ffffff)
-                              | ((alpha[i] * 17) << 24);
+                              | ((alpha[i] * 17U) << 24);
         return;
     }