stream/dvb: initialize parsing buffers for VDR-style configs

stream/stream_dvb.c

@@ -294,6 +294,8 @@ static dvb_channels_list_t *dvb_get_channels(struct mp_log *log,
 
         vpid_str[0] = apid_str[0] = tpid_str[0] = 0;
         vdr_loc_str[0] = vdr_par_str[0] = 0;
+        tmp_lcr[0] = tmp_hier[0] = inv[0] = bw[0] = 0;
+        cr[0] = mod[0] = transm[0] = gi[0] = 0;
 
         char *colon = strchr(line, ':');
         if (!colon)