Fix apparently exploitable race condition.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
diff --git a/libavutil/log.c b/libavutil/log.c
index 4bb9652..fb773d0 100644
--- a/libavutil/log.c
+++ b/libavutil/log.c
@@ -33,7 +33,8 @@
 {
     static int print_prefix=1;
     static int count;
-    static char line[1024], prev[1024];
+    static char prev[1024];
+    char line[1024];
     AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
     if(level>av_log_level)
         return;