libs/netdb: add sanity check to avoid null pointer reference
@@ -736,8 +736,11 @@ int gethostentbyname_r(FAR const char *name,
return OK;
}
else if ((flags & AI_NUMERICHOST) != 0)
+ {
+ if (h_errnop)
{
*h_errnop = EAI_NONAME;
+ }
return ERROR;
}
