Rename constant in client2.c
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 170ce73..fba02ac 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -128,14 +128,14 @@
#define GET_REQUEST_END "\r\n\r\n"
#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#define USAGE_CALLBACK \
+#define USAGE_CONTEXT_CRT_CB \
" context_crt_cb=%%d This determines whether the CRT verification callback is bound\n" \
" to the SSL configuration of the SSL context.\n" \
" Possible values:\n"\
" - 0 (default): Use CRT callback bound to configuration\n" \
" - 1: Use CRT callback bound to SSL context\n"
#else
-#define USAGE_CALLBACK ""
+#define USAGE_CONTEXT_CRT_CB ""
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#if defined(MBEDTLS_FS_IO)
@@ -337,7 +337,7 @@
USAGE_TICKETS \
USAGE_MAX_FRAG_LEN \
USAGE_TRUNC_HMAC \
- USAGE_CALLBACK \
+ USAGE_CONTEXT_CRT_CB \
USAGE_ALPN \
USAGE_FALLBACK \
USAGE_EMS \