Fix build failure due to parallel building

Package builds now and can be queued for a rebuild.

.SRCINFO

 pkgbase = farstream
-	pkgdesc = Farstream (formerly Farsight) - Audio/Video Communications Framework
+	pkgdesc = The Farstream VVoIP framework (formerly farsight2)
 	pkgver = 0.2.9
 	pkgrel = 3
 	url = https://www.freedesktop.org/wiki/Software/Farstream
 	arch = x86_64
-	license = LGPL
+	license = LGPL-2.1-or-later
 	makedepends = gobject-introspection
 	makedepends = python
 	makedepends = glib2-devel