Fix memory leak, circular reference on publish()

Reported, analised and fixed by Tiago Quintela and Nuno Mota.

Signed-off-by: Pedro Melo <melo@simplicidade.org>

lib/AnyEvent/NSQ/Client.pm

@@ -38,15 +38,27 @@ sub publish {
   my $conn = $self->_random_connected_conn;
   croak "ERROR: there no active connections at this moment," unless $conn;
 
+  my @args;
   if (ref($data[-1]) eq 'CODE' or !defined($data[-1])) {
     my $cb = pop @data;
-    push @data, sub { $cb->($self, $topic, \@data, @_) }
-      if $cb;
+
+    if ($cb) {
+      my @cb_data = @data;
+      push @data, sub { $cb->($self, $topic, \@cb_data, @_) }
+    }
   }
 
   return $conn->publish($topic, @data);
 }
 
+sub ready {
+  my ($self, $ready_count) = @_;
+
+  $_->{conn}->ready($ready_count) for values %{ $self->{nsqd_conns} };
+
+  return;
+}
+
 
 #### Argument parsing
 

lib/AnyEvent/NSQ/Reader.pm

@@ -71,7 +71,7 @@ sub _identified {
 sub mark_as_done_msg {
   my ($self, $msg) = @_;
 
-  my $conn = $self->_find_and_delete_message_connection($msg);
+  my $conn = $self->_find_message_connection($msg, {delete => 1});
 
   $conn->mark_as_done_msg($msg);
   return 1;
@@ -80,31 +80,32 @@ sub mark_as_done_msg {
 sub requeue_msg {
   my ($self, $msg, $delay) = @_;
 
-  my $conn = $self->_find_and_delete_message_connection($msg);
+  my $conn = $self->_find_message_connection($msg, {delete => 1});
 
   $conn->requeue_msg($msg, $delay);
   return 1;
 }
 
-sub touch_message {
+sub touch_msg {
   my ($self, $msg) = @_;
 
-  my $conn = $self->_find_and_delete_message_connection($msg);
+  my $conn = $self->_find_message_connection($msg);
 
   $conn->touch_msg($msg);
   return 1;
 }
+*touch_message = \&touch_msg;
 
-sub _find_and_delete_message_connection {
-  my ($self, $msg) = @_;
+sub _find_message_connection {
+  my ($self, $msg, $opts) = @_;
+  $opts = {} unless ref $opts;
 
   my $id = ref($msg) ? $msg->{message_id} : $msg;
 
-  my $conn = delete($self->{routing}->{$id});
+  my $conn = $self->{routing}{$id};
+  delete($self->{routing}{$id}) if $opts->{delete};
 
-  if ( !$conn ) {
-    croak "WARN: Could not find the connection to route msg $id";
-  }
+  croak "WARN: Could not find the connection to route msg $id" unless $conn;
 
   return $conn;
 }