remove useless init, logfilename is static

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13848 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

ffserver.c

@@ -4448,7 +4448,6 @@ int main(int argc, char **argv)
     nb_max_connections = 5;
     max_bandwidth = 1000;
     first_stream = NULL;
-    logfilename[0] = '\0';
 
     memset(&sigact, 0, sizeof(sigact));
     sigact.sa_handler = handle_child_exit;