[Replicant] [libsamsung-ipc] [PATCH 16/21] crespo_gprs_get_iface: handle asprintf errors

[Denis 'GNUtoo' Carikli]

Without that fix we have the following warning:
    ../../../samsung-ipc/devices/crespo/crespo.c:
    In function 'crespo_gprs_get_iface':
    ../../../samsung-ipc/devices/crespo/crespo.c:587:9: warning:
    ignoring return value of 'asprintf' declared with attribute
    'warn_unused_result' [-Wunused-result]
      587 | asprintf(&iface, "%s%d", CRESPO_GPRS_IFACE_PREFIX, cid - 1);
          | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at cyberdimension.org>
---
 samsung-ipc/devices/crespo/crespo.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/samsung-ipc/devices/crespo/crespo.c b/samsung-ipc/devices/crespo/crespo.c
index 27e1dd5..5399e77 100644
--- a/samsung-ipc/devices/crespo/crespo.c
+++ b/samsung-ipc/devices/crespo/crespo.c
@@ -584,11 +584,16 @@ char *crespo_gprs_get_iface(__attribute__((unused)) struct ipc_client *client,
 			    unsigned int cid)
 {
 	char *iface = NULL;
+	int rc;
 
 	if (cid > CRESPO_GPRS_IFACE_COUNT)
 		return NULL;
 
-	asprintf(&iface, "%s%d", CRESPO_GPRS_IFACE_PREFIX, cid - 1);
+	rc = asprintf(&iface, "%s%d", CRESPO_GPRS_IFACE_PREFIX, cid - 1);
+	if (rc == -1) {
+		ipc_client_log(client, "%s: asprintf failed", __func__);
+		return NULL;
+	}
 
 	return iface;
 }
-- 
2.36.1