Simplify has_joined

vroom.pl

@@ -468,19 +468,16 @@ helper has_joined => sub {
                             AND `p`.`participant`=?');
   };
   if ($@){
-    return {msg => $@};
+    return 0;
   }
   $sth->execute($data->{room},$data->{name});
   if ($sth->err){
-    return {msg => "DB Error: " . $sth->errstr . " (code " . $sth->err . ")"};
+    return 0;
   }
   my $num;
   $sth->bind_columns(\$num);
   $sth->fetch;
-  return {
-    ok => 1,
-    data => ($num == 1) ? 1 : 0 
-  }
+  return ($num == 1) ? 1 : 0 ;
 };
 
 # Purge disconnected participants from the DB
@@ -1289,7 +1286,7 @@ post '/*action' => [action => [qw/action admin\/action/]] => sub {
   }
   # Refuse any action from non members of the room
   if ($prefix ne 'admin' && (!$self->session('name') ||
-                             !$self->has_joined({name => $self->session('name'), room => $room})->{data} ||
+                             !$self->has_joined({name => $self->session('name'), room => $room}) ||
                              !$self->session($room) ||
                              !$self->session($room)->{role})){
     return $self->render(