Scripting: Return status from socket.connect, fix coding style

res/scripts/socketserver.lua

@@ -83,7 +83,7 @@ server = nil
 while not server do
 	server, err = socket.bind(nil, port)
 	if err then
-		if err == "address in use" then
+		if err == socket.ERRORS.ADDRESS_IN_USE then
 			port = port + 1
 		else
 			console:error(ST_format("Bind", err, true))

src/script/engines/lua.c

@@ -126,6 +126,7 @@ static const char* _socketLuaSource =
 	"      end,\n"
 	"      connect = function(self, address, port)\n"
 	"        local status = self._s:connect(address, port)\n"
+	"        return socket._wrap(status)\n"
 	"      end,\n"
 	"      listen = function(self, backlog)\n"
 	"        local status = self._s:listen(backlog or 1)\n"