Description: better condition for null string
Bug-Debian: http://bugs.debian.org/697197
Forwarded: yes
Last-Update: <2013-06-28>

--- mha4mysql-manager-0.55.orig/lib/MHA/ManagerConst.pm
+++ mha4mysql-manager-0.55/lib/MHA/ManagerConst.pm
@@ -89,7 +89,7 @@ our $DEFAULT_GLOBAL_CONF = "/etc/masterh
 our $log_fmt = sub {
   my %args = @_;
   my $msg  = $args{message};
-  $msg = "" unless ($msg);
+  $msg = "" unless(defined($msg));
   chomp $msg;
   if ( $args{level} eq "error" ) {
     my ( $ln, $script ) = ( caller(4) )[ 2, 1 ];
