clarify.

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@443 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/freetdm/src/isdn/Q931api.c

@@ -208,9 +208,10 @@ ie Q931AppendIE( L3UCHAR *pm, L3UCHAR *pi)
 
 /*****************************************************************************
 *****************************************************************************/
+static L3INT crv={1};
+
 L3INT Q931GetUniqueCRV(Q931_TrunkInfo_t *pTrunk)
 {
-	static L3INT crv={1};
 	crv++;
 	if (crv > 32766) crv = 1;
 	return crv;