oml: gsm_objclass2{mo,obj}(): set cause for unknown obj_class

This patch makes BTS_Tests_OML.TC_wrong_obj_class pass.

Change-Id: I30e109a7c86e651fb7055a80ef0656d8563475c8
Fixes: OS#5966
---
M src/common/oml.c
1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/src/common/oml.c b/src/common/oml.c
index 9d9778e..361f59e 100644
--- a/src/common/oml.c
+++ b/src/common/oml.c
@@ -1740,7 +1740,7 @@
 {
 	struct gsm_bts_trx *trx;
 
-	switch (obj_class) {
+	switch ((enum abis_nm_obj_class)obj_class) {
 	case NM_OC_BTS:
 		return &bts->mo;
 	case NM_OC_RADIO_CARRIER:
@@ -1771,8 +1771,11 @@
 		if (obj_inst->trx_nr >= ARRAY_SIZE(g_bts_sm->gprs.nse.nsvc))
 			goto nm_nack_objinst_unkn;
 		return &g_bts_sm->gprs.nse.nsvc[obj_inst->trx_nr].mo;
+	default:
+		if (c != NULL)
+			*c = NM_NACK_OBJCLASS_NOTSUPP;
+		return NULL;
 	}
-	return NULL;
 
 nm_nack_trxnr_unkn:
 	if (c != NULL)
@@ -1792,7 +1795,7 @@
 {
 	struct gsm_bts_trx *trx;
 
-	switch (obj_class) {
+	switch ((enum abis_nm_obj_class)obj_class) {
 	case NM_OC_BTS:
 		return bts;
 	case NM_OC_RADIO_CARRIER:
@@ -1823,8 +1826,11 @@
 		if (obj_inst->trx_nr >= ARRAY_SIZE(g_bts_sm->gprs.nse.nsvc))
 			goto nm_nack_objinst_unkn;
 		return &g_bts_sm->gprs.nse.nsvc[obj_inst->trx_nr];
+	default:
+		if (c != NULL)
+			*c = NM_NACK_OBJCLASS_NOTSUPP;
+		return NULL;
 	}
-	return NULL;
 
 nm_nack_trxnr_unkn:
 	if (c != NULL)

