Removed some obsolete parentheses in TTLS and PEAP modules

This makes the code a little bit cleaner, but doesn't change any functionality.
Merge pull request #695 from qnet-herwin/brackets_ttls_peap

Removed some obsolete parentheses in TTLS and PEAP modules
Remove built radtest (accidentally unignored)
Fix bug where when using a response filter, requests where the response failed the filter were still written to the capture file
Fix invalid assert
Should always set the pointer to NULL to avoid corner case on malloc failure