OS-1576 Sundry uninitialised variables
Reviewed by: Robert Mustacchi <rm@joyent.com>

@@ -1246,11 +1246,11 @@
         zone_state_t zstate;
         zone_cmd_t cmd;
         boolean_t debug;
         zone_cmd_arg_t *zargp;
 
-        boolean_t kernelcall;
+        boolean_t kernelcall = B_TRUE;
 
         int rval = -1;
         uint64_t uniqid;
         zoneid_t zoneid = -1;
         zlog_t zlog;