sgsn_test: Fix missing = in == type check
Change-Id: I696a7d25d2f4d19922e05a7e83c4aeec5c44fb07
Fixes: Coverity CID 135156
diff --git a/openbsc/tests/sgsn/sgsn_test.c b/openbsc/tests/sgsn/sgsn_test.c
index 789817c..e7b7458 100644
--- a/openbsc/tests/sgsn/sgsn_test.c
+++ b/openbsc/tests/sgsn/sgsn_test.c
@@ -627,7 +627,7 @@
/* Inject InsertSubscrData GSUP message */
last_updated_subscr = NULL;
rc = rx_gsup_message(insert_data_req, sizeof(insert_data_req));
- OSMO_ASSERT(rc = -ENOTSUP); /* not connected */
+ OSMO_ASSERT(rc == -ENOTSUP); /* not connected */
OSMO_ASSERT(last_updated_subscr == s1);
/* Inject DeleteSubscrData GSUP message */