[reSIProcate] Memory leak in case of some badly formed headers in sip message

[Volodymyr Tarasenko]

Hi,

As I see there is a memory leak in case reciprocate receives a sip message with some badly formed headers.

For example, if From is something like:
From: "Test" <sip:12345678 @my.test.com >
                                      ^^^^
an exception is throwing in TransactionState::process() and this will lead to memory leak: sip  message which is retrieved from Fifo will not be deleted.

I've attached simplest patch for this, but I think it should checked more carefully... 

Regards,
Volodymyr!


      
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