be more failure tolerant

lam-packaging/debian/postrm

@@ -2,6 +2,10 @@
 
 set -e
 
+if [ "$1" = "upgrade" ]; then
+	exit 0
+fi
+
 if [ -f /usr/share/debconf/confmodule ]; then
 	. /usr/share/debconf/confmodule
 	db_version 2.0 || [ $? -lt 30 ]
@@ -20,9 +24,9 @@ if [ -f /usr/share/debconf/confmodule ]; then
 				server=${server%,}
 				case "$server" in
 						apache2)
-						        set +e
-								a2disconf -q ldap-account-manager
-								set -e
+								if [ `a2query -q -c ldap-account-manager` ]; then
+									a2disconf -q ldap-account-manager
+								fi
 								rm -f /etc/$server/conf-available/ldap-account-manager.conf
 								test -x /usr/sbin/$server || continue
 								restart="$restart $server"