xinit: fix buffer overflow when too many arguments are given

See: https://lists.x.org/archives/xorg-devel/2019-January/057886.html

srcpkgs/xinit/patches/fix-buffer-overflow.patch

@@ -0,0 +1,39 @@
+Signed-off-by: Tobias Stoeckmann <tobias at stoeckmann.org>
+---
+ xinit.c | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/xinit.c b/xinit.c
+index f826b7a..8efd0be 100644
+--- xinit.c
++++ xinit.c
+@@ -151,7 +151,6 @@ main(int argc, char *argv[])
+     register char **ptr;
+     pid_t pid;
+     int client_given = 0, server_given = 0;
+-    int client_args_given = 0, server_args_given = 0;
+     int start_of_client_args, start_of_server_args;
+     struct sigaction sa, si;
+ #ifdef __APPLE__
+@@ -174,7 +173,8 @@ main(int argc, char *argv[])
+     }
+     start_of_client_args = (cptr - client);
+     while (argc && strcmp(*argv, "--")) {
+-        client_args_given++;
++        if (cptr > clientargv + 98)
++            Fatalx("too many client arguments");
+         *cptr++ = *argv++;
+         argc--;
+     }
+@@ -202,7 +202,8 @@ main(int argc, char *argv[])
+ 
+     start_of_server_args = (sptr - server);
+     while (--argc >= 0) {
+-        server_args_given++;
++        if (sptr > serverargv + 98)
++            Fatalx("too many server arguments");
+         *sptr++ = *argv++;
+     }
+     *sptr = NULL;
+-- 
+2.20.1

srcpkgs/xinit/template

@@ -1,22 +1,23 @@
-# Template build file for 'xinit'.
+# Template file for 'xinit'
 pkgname=xinit
 version=1.4.0
-revision=3
+revision=4
 build_style=gnu-configure
 configure_args="--with-xinitdir=/etc/X11/xinit"
 hostmakedepends="pkg-config"
 makedepends="libX11-devel"
+short_desc="X init program"
+maintainer="Juan RP <xtraeme@voidlinux.org>"
+license="MIT"
+homepage="http://xorg.freedesktop.org/"
+distfiles="${XORG_SITE}/app/${pkgname}-${version}.tar.bz2"
+checksum=230835eef2f5978a1e1344928168119373f6df1d0a32c09515e545721ee582ef
+
 conf_files="
 	/etc/X11/xinit/xinitrc
 	/etc/X11/xinit/xserverrc
 	/etc/skel/.xinitrc
 	/etc/skel/.xsession"
-short_desc="X init program"
-maintainer="Juan RP <xtraeme@voidlinux.org>"
-homepage="http://xorg.freedesktop.org/"
-license="MIT"
-distfiles="${XORG_SITE}/app/$pkgname-$version.tar.bz2"
-checksum=230835eef2f5978a1e1344928168119373f6df1d0a32c09515e545721ee582ef
 
 post_install() {
 	vinstall ${FILESDIR}/xinitrc 644 etc/skel .xinitrc