Allow all pending transaction results to be cancelled.

lib/roles/app.js

@@ -478,13 +478,12 @@ module.exports = function(options) {
               }
             })
             .catch(function(err) {
-              var reply = wireutil.reply('storage')
               log.error('Storage upload had an error', err.stack)
               leaveChannel(responseChannel)
-              push.send([
-                channel
-              , reply.fail('fail')
-              ])
+              socket.emit('tx.cancel', responseChannel, {
+                success: false
+              , data: 'fail_upload'
+              })
             })
         })
         .on('forward.test', function(channel, responseChannel, data) {