move http_port initialisation to main.v too

Author: spytheman

src/gitly.v

@@ -12,7 +12,6 @@ import config
 
 const (
 	commits_per_page   = 35
-	http_port          = os.getenv_opt('GITLY_PORT') or { '8080' }.int()
 	expire_length      = 200
 	posts_per_day      = 5
 	max_username_len   = 40

src/main.v

@@ -1,6 +1,8 @@
 import os
 import vweb
 
+const http_port = os.getenv_opt('GITLY_PORT') or { '8080' }.int()
+
 fn main() {
 	if os.args.contains('ci_run') {
 		return