return WOLFSSL_FAILURE if nid is returned null

Author: rlm2002

src/ssl.c

@@ -19485,6 +19485,7 @@ void* wolfSSL_GetHKDFExtractCtx(WOLFSSL* ssl)
                             int no_name)
     {
         int bufSz;
+        int nid;
         const char* desc;
         const char* name;
 
@@ -19503,7 +19504,12 @@ void* wolfSSL_GetHKDFExtractCtx(WOLFSSL* ssl)
 #if defined(OPENSSL_EXTRA_X509_SMALL) && !defined(OPENSSL_EXTRA)
         name = a->sName;
 #else
-        name = wolfSSL_OBJ_nid2ln(wolfSSL_OBJ_obj2nid(a));
+        nid = wolfSSL_OBJ_obj2nid(a);
+        if (nid < 0) {
+            WOLFSSL_ERROR(nid);
+            return WOLFSSL_FAILURE;
+        }
+        name = wolfSSL_OBJ_nid2ln(nid);
 #endif
 
         if (name == NULL) {