test_auth_digest.c: fixed warnings from function declarations
test_auth_digest.c: fixed warnings from function declarations

darcs-hash:20090116194245-db55f-8144e4aa8e9c7918ffdf6a4f2be884f77b1093a8.gz

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