add useless pkgbase var

.SRCINFO

@@ -1,4 +1,4 @@
-pkgbase = dbus-xdg-elogind
+pkgbase = dbus-xdg
 	pkgdesc = Freedesktop.org message bus system - but do not create a ~/.dbus directory (for non-systemd systems)
 	pkgver = 1.12.20
 	pkgrel = 1

PKGBUILD

@@ -4,6 +4,7 @@
 # Contributor: Tom Gundersen <teg@jklm.no>
 # Contributor: Link Dupont <link@subpop.net>
 
+pkgbase=dbus-xdg
 pkgname=(dbus-xdg-elogind dbus-docs)
 pkgver=1.12.20
 pkgrel=1