90_at.pm: remove volatile on change (Forum #47941)

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@10594 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/90_at.pm

@@ -82,6 +82,7 @@ at_Define($$)
   $rel = "" if(!defined($rel));
   $rep = "" if(!defined($rep));
   $cnt = "" if(!defined($cnt));
+  delete $hash->{VOLATILE} if (defined($hash->{VOLATILE}));
   $hash->{RELATIVE} = ($rel ? "yes" : "no");
   $hash->{PERIODIC} = ($rep ? "yes" : "no");
   $hash->{TIMESPEC} = $tspec;