Use new osmo stat items/ctr APIs

Generated using several semantinc patches with spatch.

Change-Id: I3ee853539949a763a309856bf2e7196415b23741
diff --git a/src/libmsc/mncc_call.c b/src/libmsc/mncc_call.c
index 131620d..c9a6d56 100644
--- a/src/libmsc/mncc_call.c
+++ b/src/libmsc/mncc_call.c
@@ -224,7 +224,7 @@
 	mncc_call->local_msisdn_present = true;
 	mncc_call->local_msisdn = mncc_msg.signal.calling;
 
-	rate_ctr_inc(&gsmnet->msc_ctrs->ctr[MSC_CTR_CALL_MO_SETUP]);
+	rate_ctr_inc(rate_ctr_group_get_ctr(gsmnet->msc_ctrs, MSC_CTR_CALL_MO_SETUP));
 
 	mncc_call_tx(mncc_call, &mncc_msg);
 }