--- helpers/external_acl/wbinfo_group/ext_wbinfo_group_acl.pl.in.original	2016-02-15 14:59:11.000000000 +0100
+++ helpers/external_acl/wbinfo_group/ext_wbinfo_group_acl.pl.in	2016-06-21 08:20:26.360675556 +0200
@@ -124,7 +124,7 @@
 my $user;
 my $group;
 my @groups;
-my $ans;
+my $ans = "";
 
 # Disable output buffering
 $|=1;