ZT_SIG_HARDHDLC needs ZT_SIG_CLEAR bit set too, fixes OPENZAP-96

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@941 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/src/ozmod/ozmod_zt/ozmod_zt.h

@@ -242,7 +242,7 @@ ZT_SIG_CLEAR				= (1 << 7),
 ZT_SIG_HDLCRAW				= ((1 << 8)  | ZT_SIG_CLEAR),
 ZT_SIG_HDLCFCS				= ((1 << 9)  | ZT_SIG_HDLCRAW),
 ZT_SIG_CAS                  = (1 << 15),
-ZT_SIG_HARDHDLC				= (1 << 19),
+ZT_SIG_HARDHDLC				= ((1 << 19) | ZT_SIG_CLEAR),
 } zt_sigtype_t;
 
 typedef enum {