ci: fix `v build-tools`

cmd/tools/gen_vc.v

@@ -125,7 +125,7 @@ fn main() {
 	}
 	// webhook server mode
 	if flag_options.serve {
-		vweb.run<WebhookServer>(flag_options.port)
+		vweb.run<WebhookServer>(&WebhookServer{}, flag_options.port)
 	} else {
 		// cmd mode
 		mut gen_vc := new_gen_vc(flag_options)

vlib/v/ast/table.v

@@ -28,7 +28,7 @@ pub mut:
 	panic_handler    FnPanicHandler = default_table_panic_handler
 	panic_userdata   voidptr        = voidptr(0) // can be used to pass arbitrary data to panic_handler;
 	panic_npanics    int
-	cur_fn           &FnDecl // previously stored in Checker.cur_fn and Gen.cur_fn
+	cur_fn           &FnDecl = 0 // previously stored in Checker.cur_fn and Gen.cur_fn
 }
 
 [unsafe]

vlib/v/doc/doc.v

@@ -94,7 +94,6 @@ pub mut:
 	table     &ast.Table      = &ast.Table{}
 	checker   checker.Checker = checker.Checker{
 		table: 0
-		cur_fn: 0
 		pref: 0
 	}
 	fmt                 fmt.Fmt