shithub: vcardfs

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fixes empty group string

--- a/libvcard/vcard.c

+++ b/libvcard/vcard.c

@@ -162,8 +162,8 @@

 		ls = smprint(

 			"%s%s"            /* group string */

 			"%s%s:%s\r\n",    /* name, param, value */

-			(l->group ? l->group : ""),  /* group string */

-			(l->group ? "." : ""),       /* group dot */

+			(l->group && *l->group ? l->group : ""),  /* group string */

+			(l->group && *l->group ? "." : ""),       /* group dot */

 			upper, ps, l->value);

 		free(upper);

 		if (!ls) {