Fix build error in tls_client_main.c
@@ -462,7 +462,7 @@ int tls_client_cb(void *args)
int tail_len;
int i;
int written;
- int frags;
+ int frags = 0;
int retry_left;
mbedtls_net_context server_fd;
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
