msg_header.h: removed c99ism
msg_header.h: removed c99ism

darcs-hash:20080512192002-db55f-258e35dce7e1e1b99bd2b16b6e8f99c08fcdb1ca.gz

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