[SCM] libav/experimental: Fix overflow.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 33a67bd6c7e4fb75e01a0f781e0a679c861f2950
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Wed Sep 10 20:47:16 2008 +0000

    Fix overflow.
    
    Originally committed as revision 27573 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

diff --git a/libswscale/swscale_template.c b/libswscale/swscale_template.c
index 81743f2..6048bfc 100644
--- a/libswscale/swscale_template.c
+++ b/libswscale/swscale_template.c
@@ -190,8 +190,8 @@
     "1:                                   \n\t"\
     "movq  (%0, %%"REG_a", 2), %%mm0      \n\t"\
     "movq 8(%0, %%"REG_a", 2), %%mm1      \n\t"\
-    "paddw              %%mm7, %%mm0      \n\t"\
-    "paddw              %%mm7, %%mm1      \n\t"\
+    "paddsw             %%mm7, %%mm0      \n\t"\
+    "paddsw             %%mm7, %%mm1      \n\t"\
     "psraw                 $7, %%mm0      \n\t"\
     "psraw                 $7, %%mm1      \n\t"\
     "packuswb           %%mm1, %%mm0      \n\t"\

-- 
Libav/FFmpeg packaging