fix cgiWifi

esp-link/cgiwifi.c

@@ -227,18 +227,22 @@ static int ICACHE_FLASH_ATTR cgiWiFiGetScan(HttpdConnData *connData) {
   const int chunk = 1460/64; // ssid is up to 32 chars
   int len = 0;
 
+  os_printf("GET scan: cgiData=%d noAps=%d\n", (int)connData->cgiData, cgiWifiAps.noAps);
+
   // handle continuation call, connData->cgiData-1 is the position in the scan results where we
   // we need to continue sending from (using -1 'cause 0 means it's the first call)
   if (connData->cgiData) {
     int next = (int)connData->cgiData-1;
     int pos = next;
     while (pos < cgiWifiAps.noAps && pos < next+chunk) {
-      len += os_sprintf(buff+len, "{\"essid\": \"%s\", \"rssi\": %d, \"enc\": \"%d\"},\n",
-        cgiWifiAps.apData[pos]->ssid, cgiWifiAps.apData[pos]->rssi, cgiWifiAps.apData[pos]->enc);
+      len += os_sprintf(buff+len, "{\"essid\": \"%s\", \"rssi\": %d, \"enc\": \"%d\"}%c\n",
+        cgiWifiAps.apData[pos]->ssid, cgiWifiAps.apData[pos]->rssi, cgiWifiAps.apData[pos]->enc,
+	(pos+1 == cgiWifiAps.noAps) ? ' ' : ',');
+      pos++;
     }
     // done or more?
     if (pos == cgiWifiAps.noAps) {
-      len += os_sprintf(buff+len-1, "]}}\n");
+      len += os_sprintf(buff+len, "]}}\n");
       httpdSend(connData, buff, len);
       return HTTPD_CGI_DONE;
     } else {