gosthash.c: use memmove in circle_xor8, as input pointers can be equal.

PR: 2858

diff --git a/engines/ccgost/gosthash.c b/engines/ccgost/gosthash.c
index a5c0662ffc32f35ff7d3f8d812d3b8d8fa98b302..2a458b92bab858160227a2eeecfe901f5364d04e 100644 (file)
--- a/engines/ccgost/gosthash.c
+++ b/engines/ccgost/gosthash.c
@@ -42,8 +42,8 @@ static void circle_xor8 (const byte *w, byte *k)
        byte buf[8];
        int i;
        memcpy(buf,w,8);
-       memcpy(k,w+8,24);
-       for(i=0;i<8;i++) 
+       memmove(k,w+8,24);
+       for(i=0;i<8;i++)
                k[i+24]=buf[i]^k[i];
        }