MSC_Tests: fix iterator in f_init()

With f_init(), the user has the option to specifiy how many bsc
instances should be created. A for loop then iterates over the
prepared configurations and calls f_bssap_init(). The first
parameter g_bssap is tied to index 0 constantly but should be
tied to the iterator i.

- use i instad of 0 as iterator for g_bssap

Change-Id: I490bab70224d236ab576a2ea3863f6d0afd5f22a
diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 1ede8e6..edaa61b 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -227,7 +227,7 @@
 
 	for (var integer i := 0; i < num_bsc; i := i + 1) {
 		if (isbound(mp_bssap_cfg[i])) {
-			f_bssap_init(g_bssap[0], mp_bssap_cfg[i], "MSC_Test_" & int2str(i), BSC_BssmapOps);
+			f_bssap_init(g_bssap[i], mp_bssap_cfg[i], "MSC_Test_" & int2str(i), BSC_BssmapOps);
 		} else {
 			setverdict(fail, "missing BSSAP configuration");
 		}