Invalid SIP dialog after several calls

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Hi,

I've found an issue using PJSIP which I would like to share with you.
After performing several consecutive calls, by sending 'INVITE's and 
canceling them with 'CANCEL' requests the dialog becomes invalid and the 
applications crashes.

I've back-traced it until the function 'pjsip_dlg_on_tsx_state' at 
http://trac.pjsip.org/repos/browser/pjproject/trunk/pjsip/src/pjsip/sip_dialog.c
Locking the dialog results on a crash.

Can you please take a look at it? Thanks!

Best regards,
Nuno Costa

-- 
=========================================
Nuno Costa
Senior Engineer
WIT-Software Lda.
Coimbra (Portugal), San Jose (California)
Phone : +351.239.801030
Email : nuno.costa at wit-software.com 
Web: http://www.wit-software.com
=========================================

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