Fix undefined index 'count' (FRAMEWORK_6_0)

[ralflang]

This is bytestream's #22 applied to FRAMEWORK_6_0 - the original PR was against master. I don't do changes to master, that's for @mrubinsk to decide.

[what-the-diff]

PR Summary

• Added Condition Checking for a Variable in Socket.php
  This update includes the addition of a safeguard in the form of an if statement in a file called Socket.php. The new piece of code makes sure that a specific piece of data ($er['count']) exists before that data is assigned to something else ($ret['count']). This is akin to checking the availability of ingredients before starting cooking. This will help prevent potential problems or 'bugs' that can occur if this data is not available.