Index: hid_cam.c
===================================================================
--- hid_cam.c	(revision 23523)
+++ hid_cam.c	(revision 23524)
@@ -290,10 +290,11 @@
 {
 	char *curr, *next, *purpose;
 
+	memset(dst, 0, sizeof(pcb_cam_t));
+
 	if ((src == NULL) || (*src == '\0'))
 		return 0;
 
-	memset(dst, 0, sizeof(pcb_cam_t));
 	dst->pcb = pcb;
 	dst->inst = pcb_strdup(src);
 	layervis_save_and_reset(dst);