eventType: avoid error message for empty files (Forum #26330)

git-svn-id: https://svn.fhem.de/fhem/trunk@6428 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/91_eventTypes.pm

@@ -37,6 +37,7 @@ eventTypes_Define($$)
 
   my ($err, @content) = FileRead($f);
   foreach my $l (@content) {
+    next if(!defined($l));
     next if($l =~ m/ CULHM (SND|RCV) /);
     next if($l =~ m/ UNKNOWNCODE /);
     next if($l =~ m/^\d+ global /);