man: use a variable to store the char * from node_get_url.

We get segfaults on some platforms when we do

    cmark_strbuf_printf(man, " (%s)", cmark_node_get_url(node));

but they go away with:

    url = cmark_node_get_url(node);
    cmark_strbuf_printf(man, " (%s)", url);

I don't understand why.

Closes #253.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/man.c b/src/man.c
index 1b45f8b..3470343 100644
--- a/src/man.c
+++ b/src/man.c
@@ -49,6 +49,7 @@ S_render_node(cmark_node *node, cmark_event_type ev_type, void *vstate)
 	cmark_node *tmp;
 	cmark_strbuf *man = state->man;
 	int list_number;
+	const char *url;
 	bool entering = (ev_type == CMARK_EVENT_ENTER);
 
 	if (state->plain == node) { // back at original node
@@ -203,8 +204,8 @@ S_render_node(cmark_node *node, cmark_event_type ev_type, void *vstate)
 
 	case CMARK_NODE_LINK:
 		if (!entering) {
-			cmark_strbuf_printf(man, " (%s)",
-				      cmark_node_get_url(node));
+			url = cmark_node_get_url(node);
+			cmark_strbuf_printf(man, " (%s)", url);
 		}
 		break;