BUILD: ssl: use __fallthrough in cli_io_handler_tlskeys_files()
This avoids two build warnings when preprocessing happens before compiling
with gcc >= 7.
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index 8dba501..187e190 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -7390,7 +7390,7 @@
ctx->next_ref = tlskeys_list_get_next(&tlskeys_reference, &tlskeys_reference);
ctx->state = SHOW_KEYS_LIST;
- /* fall through */
+ __fallthrough;
case SHOW_KEYS_LIST:
while (ctx->next_ref) {
@@ -7458,7 +7458,7 @@
ctx->next_ref = tlskeys_list_get_next(&ref->list, &tlskeys_reference);
}
ctx->state = SHOW_KEYS_DONE;
- /* fall through */
+ __fallthrough;
default:
return 1;