Fix error in backport of [18891] - Closes #1171

modules/access/udp.c

@@ -201,9 +201,9 @@ static int Open( vlc_object_t *p_this )
     p_access->info.b_prebuffered = VLC_FALSE;
     p_access->info.i_title = 0;
     p_access->info.i_seekpoint = 0;
-    memset (p_sys, 0, sizeof (*p_sys));
 
     p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
+    memset (p_sys, 0, sizeof (*p_sys));
     p_sys->fd = net_OpenUDP( p_access, psz_bind_addr, i_bind_port,
                                       psz_server_addr, i_server_port );
     if( p_sys->fd < 0 )