MGCP_Test: fix test expectation in TC_crcx_wildcarded_exhaust

The testcase TC_crcx_wildcarded_exhaust assumes a wrong number of
endpoints. Since osmo-mgw has a wrongly solved off-by-one in its
endpoint allocation it allocates the wrong number of endpoints. This
is now fixed, lets now also fix the test expection.

(The failure of TC_crcx_wildcarded_exhaust also causes
 TC_crcx_dlcx_30ep to fail.)

Depends: Change id I73b31e3c236a61ea0a6f76ef5ff98ce589f52c77
Change-Id: I73344ef8793cc81df0a1815bb8d890e7849cdd20
Related: OS#2659
diff --git a/mgw/MGCP_Test.ttcn b/mgw/MGCP_Test.ttcn
index be4e634..6caef79 100644
--- a/mgw/MGCP_Test.ttcn
+++ b/mgw/MGCP_Test.ttcn
@@ -885,7 +885,7 @@
 
 	/* test valid wildcarded CRCX */
 	testcase TC_crcx_wildcarded_exhaust() runs on dummy_CT {
-		const integer n_endpoints := 32;
+		const integer n_endpoints := 31;
 		var integer i;
 		var template MgcpCommand cmd;
 		var MgcpResponse resp;