Include error messages on extension check failure.

Reviewed-by: Emilia Käsper <emilia@openssl.org>

ssl/ssltest.c

diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index efcd668..f20553f 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -2103,6 +2103,7 @@
 #endif
 	if (verify_serverinfo() < 0)
 		{
+		fprintf(stderr, "Server info verify error\n");
 		ret = 1;
 		goto err;
 		}
@@ -2114,6 +2115,7 @@
 
 	if (custom_ext_error)
 		{
+		fprintf(stderr, "Custom extension error\n");
 		ret = 1;
 		goto err;
 		}
@@ -2435,11 +2437,13 @@
 #endif
 	if (verify_serverinfo() < 0)
 		{
+		fprintf(stderr, "Server info verify error\n");
 		ret = 1;
 		goto err;
 		}
 	if (custom_ext_error)
 		{
+		fprintf(stderr, "Custom extension error\n");
 		ret = 1;
 		goto err;
 		}