test_basic_call.c: fixed check for no session timers.
test_basic_call.c: fixed check for no session timers.

darcs-hash:20070412090346-65a35-0cbb7fb79ffd37c72ad785fad67724c31b902c58.gz

unispeech/sofia-sip,xhook/sofia-sip,xhook/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,jart/sofia-sip,unispeech/sofia-sip,jart/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,jart/sofia-sip,unispeech/sofia-sip,xhook/sofia-sip,unispeech/sofia-sip,xhook/sofia-sip,xhook/sofia-sip