asprintf: fix warnings in SNMP tests related to asprintf

diff --git a/tests/check_snmp.c b/tests/check_snmp.c
index 20e5805037587b26c40c06b771d5a6bb54c607b4..c82ad15c2cafba971da67f2c33bae8b96ea8e9ca 100644 (file)
--- a/tests/check_snmp.c
+++ b/tests/check_snmp.c
@@ -333,7 +333,11 @@ snmp_oidrepr(oid *name, size_t namelen)
        for (i = 0; i < namelen; i++) {
                /* Not very efficient... */
                char *newbuffer = NULL;
-               asprintf(&newbuffer, "%s.%u", buffer[current]?buffer[current]:"", name[i]);
+               if (asprintf(&newbuffer, "%s.%lu", buffer[current]?buffer[current]:"", name[i]) == -1) {
+                       free(buffer[current]);
+                       buffer[current] = NULL;
+                       return NULL;
+               }
                if (buffer[current]) free(buffer[current]);
                buffer[current] = newbuffer;
        }