OTA固件下载完成之后，固件校验失败
log具体如下：
(57881) OTA_ali: WiFi OTA progress----------[99%]
I (57881) esp_image: segment 0: paddr=00210020 vaddr=3fcd6100 size=016c8h ( 5832)
I (57885) esp_image: segment 1: paddr=002116f0 vaddr=403ce000 size=00930h ( 2352)
I (57892) esp_image: segment 2: paddr=00212028 vaddr=403d0000 size=02d40h ( 11584)
E (57902) esp_image: Image hash failed - image is corrupt
E (57908) OTA_ali: Image valida
tion failed, image is corrupted
E (57913) OTA_ali: ESP_HTTPS_OTA upgrade failed 0x1503
I (60852) main_app: Free memory: 181188 bytes
