test/unit/25.cfg: Forgot to set match mode in test

Match mode is set to alphanumerical now.

test/unit/25.cfg

@@ -16,6 +16,7 @@ loadmodule "mi_fifo/mi_fifo.so"
 
 modparam("usrloc", "db_mode", 3)
 modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
+modparam("userblacklist", "match_mode", 128)
 
 route {
 	#xlog("user: $rU\n");