lzo: fix memcpy_backptr() with 0 offset

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
13 years ago · 58c41799ab
parent 1858a5c25e
commit 58c41799ab
1 changed files with 1 additions and 1 deletions
--- a/libavutil/lzo.c
+++ b/libavutil/lzo.c
@ -137,7 +137,7 @@ static inline void memcpy_backptr(uint8_t *dst, int back, int cnt) {
    const uint8_t *src = &dst[-back];
    if (back == 1) {
        memset(dst, *src, cnt);
-    } else {
+    } else if(back>0) {
 #ifdef OUTBUF_PADDED
        COPY2(dst, src);
        COPY2(dst + 2, src + 2);