Cancel tx_timer_id in pgm_sender_t::out_event().

Signed-off-by: Toralf Wittner <toralf.wittner@gmail.com>

AUTHORS

@@ -44,6 +44,7 @@ Tamara Kustarova <kustarova.tamara@gmail.com>
 Taras Shpot <taras.shpot@eleks.com>
 Tero Marttila <terom@fixme.fi>
 Terry Wilson <terry@logivox.net>
+Toralf Wittner <toralf.wittner@gmail.com>
 Vitaly Mayatskikh <v.mayatskih@gmail.com>
 
 Credits

src/pgm_sender.cpp

@@ -174,9 +174,9 @@ void zmq::pgm_sender_t::out_event ()
         put_uint16 (out_buffer, offset == -1 ? 0xffff : (uint16_t) offset);
     }
 
-    if (has_rx_timer) {
-        cancel_timer (rx_timer_id);
-        has_rx_timer = false;
+    if (has_tx_timer) {
+        cancel_timer (tx_timer_id);
+        has_tx_timer = false;
     }
 
     //  Send the data.