sxhkd: Update x11/sxhkd to 0.5.9

pkgsrc changes:
 - Use `c99' (to adjust per-upstream Makefile)

Changes:
(unfortunately upstream does not provide any changelog, this is based and the
commit message)
0.5.9
-----
 - Honor LDFLAGS
 - Discard non tail chain states when locked (fixes #105)

0.5.8
-----
 - Write to the status fifo when a chain begins/ends (fixes #44)

Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/x11/sxhkd/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- Makefile	31 May 2017 05:15:47 -0000	1.2
+++ Makefile	10 May 2018 13:26:28 -0000
@@ -1,6 +1,6 @@
 # $NetBSD: Makefile,v 1.2 2017/05/31 05:15:47 maya Exp $
 
-DISTNAME=		sxhkd-0.5.7
+DISTNAME=		sxhkd-0.5.9
 CATEGORIES=		x11
 MASTER_SITES=		${MASTER_SITE_GITHUB:=baskerville/}
 GITHUB_TAG=		${PKGVERSION}
@@ -18,6 +18,8 @@ SUBST_MESSAGE.makefile=	Fixing makefile
 SUBST_FILES.makefile=	Makefile
 SUBST_SED.makefile=	-e 's,share/man,${PKGMANDIR},g'
 
+USE_LANGUAGES=		c99
+
 .include "../../x11/xcb-util/buildlink3.mk"
 .include "../../x11/xcb-util-keysyms/buildlink3.mk"
 .include "../../mk/bsd.pkg.mk"
Index: distinfo
===================================================================
RCS file: /cvsroot/pkgsrc/x11/sxhkd/distinfo,v
retrieving revision 1.3
diff -u -p -r1.3 distinfo
--- distinfo	31 May 2017 05:15:47 -0000	1.3
+++ distinfo	10 May 2018 13:26:28 -0000
@@ -1,6 +1,6 @@
 $NetBSD: distinfo,v 1.3 2017/05/31 05:15:47 maya Exp $
 
-SHA1 (sxhkd-0.5.7.tar.gz) = 319437d7a7c4f257f55314981e5cada640632f9b
-RMD160 (sxhkd-0.5.7.tar.gz) = 750a40c0a66515ce66c931b8e9d9cb35ebdebfae
-SHA512 (sxhkd-0.5.7.tar.gz) = b977c79f2f8ef311b1bbe5bab21ae60c5689d1069552368573bc9aad55e58df4abff51ccdcf74b5e7c72cdee6077da67636f45a390f0fffb1a5e34b478579a18
-Size (sxhkd-0.5.7.tar.gz) = 34472 bytes
+SHA1 (sxhkd-0.5.9.tar.gz) = e1199d78d4acea12c89a4e3163d8c86ac22e1058
+RMD160 (sxhkd-0.5.9.tar.gz) = ea0292b1422680f1bde5d4859b1d2bdbe4f4f43c
+SHA512 (sxhkd-0.5.9.tar.gz) = 32ee7261b4fa10d5a62a7fa61e689977d12afd654e81123711bda1f006e4b6baa7524352086037594e6ef1989dd8fcb6eddc1114085ee91546a69f6d1146924e
+Size (sxhkd-0.5.9.tar.gz) = 34649 bytes