dbus_g_bus_get return value

[Leonardo Boiko]

This is from the D-BUS tutorial:
     connection = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
     if (connection == NULL) {

When I run it, I have the following situation:
     16  connection = dbus_g_bus_get(DBUS_BUS_SESSION, &error);
     (gdb)
     17  if (connection == NULL) {
     (gdb) p *error
     $1 = {domain = 46, code = 0,
     message = 0x804d750 "D-BUS error org.freedesktop.DBus.Error.Failed:
     Unable to determine the address of the message bus"}
     (gdb) p connection
     $2 = (DBusGConnection *) 0x4

Maybe instead of "connection == NULL" it should check for
"error != NULL"?
-- 
Leonardo Boiko
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