[PATCH] Make check_pkgs work with the Bourne shell

[John Levon <levon@movementarian.org>]

# HG changeset patch
# User levon@movementarian.org
# Node ID 90c90e3190293954aea956d92302982225b910e5
# Parent  8a8e25ecb86cdf7c9aaa11fabc8b42754b751ca6
Make check_pkgs work with the Bourne shell

diff -r 8a8e25ecb86c -r 90c90e319029 docs/check_pkgs
--- a/docs/check_pkgs	Thu Oct 27 16:50:26 2005 +0000
+++ b/docs/check_pkgs	Mon Oct 31 16:05:32 2005 +0000
@@ -1,14 +1,14 @@
 
 silent_which ()
 {
-        if ! `which $1 1>/dev/null 2>/dev/null`; then
+        which $1 1>/dev/null 2>/dev/null || {
                 echo "*************************************************"
                 echo "*************************************************"
                 echo "* WARNING: Package '$1' is required"
                 echo "*          to build Xen documentation"
                 echo "*************************************************"
                 echo "*************************************************"
-        fi
+        }
         which $1 1>/dev/null 2>/dev/null
 }