ui-shared: return value of cgit_hosturl is not const

Signed-off-by: Christian Hesse <mail@eworm.de>
diff --git a/ui-shared.c b/ui-shared.c
index f6d38de..09c34fd 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -54,14 +54,14 @@
 		return "http://";
 }
 
-const char *cgit_hosturl(void)
+char *cgit_hosturl(void)
 {
 	if (ctx.env.http_host)
-		return ctx.env.http_host;
+		return xstrdup(ctx.env.http_host);
 	if (!ctx.env.server_name)
 		return NULL;
 	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
-		return ctx.env.server_name;
+		return xstrdup(ctx.env.server_name);
 	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
 }