fixed warning for uninitialized value in pattern match

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6262 2b470e98-0d58-463d-a4d8-8e2adae1ed80
2014-07-16 07:46:03 +00:00
parent 7ab1450b7e
commit fa92690a3f
1 changed files with 1 additions and 1 deletions
--- a/fhem/FHEM/33_readingsGroup.pm
+++ b/fhem/FHEM/33_readingsGroup.pm
@@ -556,7 +556,7 @@ readingsGroup_2html($)
        $first = 0;
        next;
      } else {
-        if( $regex =~ m/(.*)@(.*)/ ) {
+        if( $regex && $regex =~ m/(.*)@(.*)/ ) {
          $regex = $1;
          $name = $2;
          if( $name =~ m/^{(.*)}$/ ) {