licensing: Fixed the name of GPL-2+

The package referred to GPLv2+ but gentoo uses GPL-2+

TEST=ran licensing and this time the GPL-2+ license was handled ok.

BUG=chromium:271836

Change-Id: I83e57a1f20c664c7fd64638cfc9aa518b130388f
Reviewed-on: https://chromium-review.googlesource.com/174825
Reviewed-by: Marc MERLIN <merlin@chromium.org>
Commit-Queue: Marc MERLIN <merlin@chromium.org>
Tested-by: Marc MERLIN <merlin@chromium.org>
diff --git a/app-arch/xz-utils/xz-utils-4.999.9_beta-r1.ebuild b/app-arch/xz-utils/xz-utils-4.999.9_beta-r1.ebuild
index c7183b6..9772754 100644
--- a/app-arch/xz-utils/xz-utils-4.999.9_beta-r1.ebuild
+++ b/app-arch/xz-utils/xz-utils-4.999.9_beta-r1.ebuild
@@ -25,7 +25,7 @@
 DESCRIPTION="utils for managing LZMA compressed files"
 HOMEPAGE="http://tukaani.org/xz/"
 
-LICENSE="LGPL-2.1 GPLv2+ public-domain"
+LICENSE="LGPL-2.1 GPL-2+ public-domain"
 SLOT="0"
 IUSE="nls static-libs +threads"