Index: /src/router/wiviz2/channelhopper.c
===================================================================
--- /src/router/wiviz2/channelhopper.c	(revision 12475)
+++ /src/router/wiviz2/channelhopper.c	(revision 12476)
@@ -144,5 +144,5 @@
     char tmp[32];
     sprintf( tmp, "%s_ifname", nvram_safe_get( "wifi_display" ) );
-    wl_dev = nvram_safe_get( tmp );
+    char *wl_dev = nvram_safe_get( tmp );
     if (wl_ioctl(wl_dev, WLC_SET_CHANNEL, &nc, 4)<0)
 	continue;