//return !0 iff property changed.
int vcard_set_props_iff_different(struct vCard *v,char *propname,int numvals, char **vals) {
int i;
- char *oldval;
+ char *oldval = "";
for(i=0;i<numvals;i++) {
oldval = vcard_get_prop(v,propname,0,i,0);
if (oldval == NULL) break;