avformat/internal: fix compile error with some versions of g++

Fixes #6926

Signed-off-by: Aman Gupta <aman@tmm1.net>

libavformat/internal.h

@@ -541,8 +541,11 @@ static inline int ff_rename(const char *oldpath, const char *newpath, void *logc
     int ret = 0;
     if (rename(oldpath, newpath) == -1) {
         ret = AVERROR(errno);
-        if (logctx)
-            av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", oldpath, newpath, av_err2str(ret));
+        if (logctx) {
+            char err[AV_ERROR_MAX_STRING_SIZE] = {0};
+            av_make_error_string(err, AV_ERROR_MAX_STRING_SIZE, ret);
+            av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", oldpath, newpath, err);
+        }
     }
     return ret;
 }