exit if reallyallowplugin option is not specified


git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1881784 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/sa-update.raw b/sa-update.raw
index f4ebe52..f720f17 100755
--- a/sa-update.raw
+++ b/sa-update.raw
@@ -226,6 +226,7 @@
   warn "Security warning: dangerous option --allowplugins used:\n".
        "- there should never be need to use this option, see man sa-update(1)\n".
        "- specify --reallyallowplugins to allow activating plugins\n";
+  exit 2;
 }
 
 $use_inet4 = $have_inet4 && ( !$opt{'force_pf'} || $opt{'force_pf'} eq 'inet' );