fix the bug that in mdns test code redefine esp_err_t to uint32_t, which should be int32_t
((uint32_t)((c) & 0xff) << 16) | \
((uint32_t)((b) & 0xff) << 8) | \
(uint32_t)((a) & 0xff)
-
-typedef uint32_t esp_err_t;
+typedef int32_t esp_err_t;
typedef void * xSemaphoreHandle;
typedef void * xQueueHandle;
