net-analyzer/nagios-check_rbl: add ~x86 keyword.

This re-adds the ~x86 keyword that was lost when two new perl
dependencies were introduced (see the referenced bug). The package has
been tested and does indeed work on x86.

Gentoo-Bug: 538496

Package-Manager: portage-2.2.28

net-analyzer/nagios-check_rbl/nagios-check_rbl-1.3.7-r1.ebuild

@@ -22,7 +22,7 @@ SRC_URI="${HOMEPAGE}/releases/download/v${PV}/${MY_P}.tar.gz
 LICENSE="GPL-3"
 SLOT="0"
 
-KEYWORDS="~amd64 ~hppa"
+KEYWORDS="~amd64 ~hppa ~x86"
 IUSE=""
 
 # The package's INSTALL/Makefile.PL files specify its dependencies.