Avoid failing in sed if $HOME isn't set. I thought pkgsrc provided

work/.home for that, but maybe it's not getting through for some
reason? Seen on MacOS.

chat/sirc/distinfo

@@ -1,4 +1,4 @@
-$NetBSD: distinfo,v 1.5 2015/11/03 01:20:24 agc Exp $
+$NetBSD: distinfo,v 1.6 2015/11/07 22:38:08 dholland Exp $
 
 SHA1 (sirc/sirc-2.211.tar.gz) = 1daa365c44b1358964e7d7ba92d3ae3132ea0979
 RMD160 (sirc/sirc-2.211.tar.gz) = 3d6ef05fe9471158e5329ad1e1cd08304e00211d
@@ -82,3 +82,4 @@ SHA512 (sirc/yiff.pl) = 5a2191e03b8cc6cc31de1e1db3e9493a60ddcd26adfe39e2f1eb47f5
 Size (sirc/yiff.pl) = 13320 bytes
 SHA1 (patch-aa) = 0f9dd1bf6f81ca75bb80f19ab44306f26568614a
 SHA1 (patch-ab) = f684fc7dab964e0aebb8cb7538b082bb9b0947b0
+SHA1 (patch-install) = 0e0f3ab66180094da99939522d72132ad33873eb

chat/sirc/patches/patch-install

@@ -0,0 +1,13 @@
+$NetBSD: patch-install,v 1.1 2015/11/07 22:38:08 dholland Exp $
+
+Avoid failing in sed if $HOME isn't set.
+
+--- install~	1997-07-30 22:32:32.000000000 +0000
++++ install
+@@ -625,5 +625,5 @@ fi
+ 
+ echo
+ echo "Happy IRCing..."
+-echo "... and don't forget to read $libdir/README sometime :)" | sed "s|$HOME|~|"
++echo "... and don't forget to read $libdir/README sometime :)" | sed "s|${HOME:-aaaaaaaaaaa}|~|"
+