Fix 'end' command, initialize next in linked list

Thread was not ending properly because only the first
char of the end message was being sent.

The next pointer in the linked list was not being
initialized, causing it to link to bad data values.

BUG:27276657
BUG:22860713

Change-Id: Idfdf300d9ab45f9bf61eba191bb1bb0767e1cb5d
1 file changed