fix curl terminating with error state after OTA succeeded (#155)

Author: blattm

components/ota_server/ota_server.c

@@ -7,7 +7,7 @@
 #include "esp_event.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/event_groups.h"
-#include "freertos/projdefs.h"
+#include "freertos/projdefs.h"
 #include "freertos/task.h"
 
 #define FIRMWARE_REV " Rev: 0.1"
@@ -227,7 +227,7 @@ void ota_server_start_my(void) {
 
   char res_buff[128];
   int send_len;
-  send_len = sprintf(res_buff, "200 OK\n\n");
+  send_len = sprintf(res_buff, "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
   send(connect_socket, res_buff, send_len, 0);
   vTaskDelay(2000 / portTICK_PERIOD_MS);
   close(connect_socket);