[FFmpeg-cvslog] base64: fix signed overflow in shift

[Mans Rullgard]

ffmpeg | branch: master | Mans Rullgard <mans at mansr.com> | Sat Nov 24 13:03:53 2012 +0000| [dd3b73f3905c61c99f1d3fb58bc7ee380eb8aa2e] | committer: Mans Rullgard

base64: fix signed overflow in shift

Signed-off-by: Mans Rullgard <mans at mansr.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dd3b73f3905c61c99f1d3fb58bc7ee380eb8aa2e
---

 libavutil/base64.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavutil/base64.c b/libavutil/base64.c
index 73872b8..c1fba89 100644
--- a/libavutil/base64.c
+++ b/libavutil/base64.c
@@ -44,10 +44,10 @@ static const uint8_t map2[] =
 
 int av_base64_decode(uint8_t *out, const char *in, int out_size)
 {
-    int i, v;
+    int i;
+    unsigned v = 0;
     uint8_t *dst = out;
 
-    v = 0;
     for (i = 0; in[i] && in[i] != '='; i++) {
         unsigned int index= in[i]-43;
         if (index>=FF_ARRAY_ELEMS(map2) || map2[index] == 0xff)