system/s6: Bump to 2.7.2.2, fix s6-svscanboot crash handler

system/s6/APKBUILD

 # Contributor: Laurent Bercot <ska-adelie@skarnet.org>
 # Maintainer: Laurent Bercot <ska-adelie@skarnet.org>
 pkgname=s6
-pkgver=2.7.2.1
+pkgver=2.7.2.2
 pkgrel=0
 pkgdesc="skarnet.org's small & secure supervision software suite"
 url="https://skarnet.org/software/$pkgname/"
@@ -42,5 +42,5 @@ doc() {
 	cp -a "$builddir/doc" "$subpkgdir/usr/share/doc/$pkgname"
 }
 
-sha512sums="dcf032b812ce955c2276af36aa93138debcfa9e429e79af7b8da4f1e98b21e7b658564024c713fef45ffee03704d78f7618ad4b890de0bd3defa51b4689d3790  s6-2.7.2.1.tar.gz
-bad19965aa8ea138cdf5688db9ae05fc7ce2111ac0945b5b0e78cda55ad290602f28ac8b52aae395ca5e857f32e9be4d6df882286b362ba7008a52b29472ff1e  s6-svscanboot"
+sha512sums="ed7b9fbc73e9947e56ad641459c04ff210fb801c8cfdbb5f0a00bdecbe1f5969ae73a6b52b048cd6617c88308f3a7bfd0ed98a48e78b1b5ba90b96e95845d165  s6-2.7.2.2.tar.gz
+9c29bc9eee6d5ab502a5a86bb043ebd21e085022efc506a330ae5ab0eadf7038d0a3dc8e025d78d9610cf7ec0ca031887f755486c4cb4e571090ea3a9c1806ac  s6-svscanboot"

system/s6/s6-svscanboot

@@ -12,14 +12,19 @@ umask 022
 
 if { rm -rf /run/service /run/services }
 if { mkdir -p -m 0755 /run/service/.s6-svscan /run/service/s6-svscan-log }
-if { ln -sf /bin/false /run/service/.s6-svscan/crash }
+if
+{
+  redirfd -w 1 /run/service/.s6-svscan/crash
+  heredoc 0 "#!/bin/execlineb -P\nfalse\n"
+  cat
+}
 if
 {
   redirfd -w 1 /run/service/.s6-svscan/finish
   heredoc 0 "#!/bin/execlineb -P\ns6-svc -X -- \"/run/service/s6-svscan-log\"\n"
   cat
 }
-if { chmod 0755 /run/service/.s6-svscan/finish }
+if { cd /run/service/.s6-svscan chmod 0755 crash finish }
 
 
 # Directory for the catch-all logger to store its logs