Make SHA digest function write digest value with AV_WN32 instead of assuming

that output may be written as uint32_t since output buffer may not be aligned
(and it's silly to force alignment on it) and it does not work in that case
properly on some architectures.



git-svn-id: file:///var/local/repositories/ffmpeg/trunk@21754 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavutil/sha.c

@@ -25,6 +25,7 @@
 #include "avutil.h"
 #include "bswap.h"
 #include "sha.h"
+#include "intreadwrite.h"
 
 /** hash context */
 typedef struct AVSHA {
@@ -319,7 +320,7 @@ void av_sha_final(AVSHA* ctx, uint8_t *digest)
         av_sha_update(ctx, "", 1);
     av_sha_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
     for (i = 0; i < ctx->digest_len; i++)
-        ((uint32_t*)digest)[i] = be2me_32(ctx->state[i]);
+        AV_WN32(digest + i*4, be2me_32(ctx->state[i]));
 }
 
 #if LIBAVUTIL_VERSION_MAJOR < 51