Fix native leak in CryptoNative_GetX509nameInfo

The implementation was previously only freeing the STACK_OF, but not the contents of the stack. This change fixes not freeing the individual GENERAL_NAME items.

Co-authored-by: Kevin Jones <[email protected]>

Author: github-actions[bot]

src/libraries/Native/Unix/System.Security.Cryptography.Native/openssl.c

@@ -593,8 +593,8 @@ BIO* CryptoNative_GetX509NameInfo(X509* x509, int32_t nameType, int32_t forIssue
                 break;
         }
 
-        STACK_OF(GENERAL_NAME)* altNames = (STACK_OF(GENERAL_NAME)*)(
-            X509_get_ext_d2i(x509, forIssuer ? NID_issuer_alt_name : NID_subject_alt_name, NULL, NULL));
+        GENERAL_NAMES* altNames = (GENERAL_NAMES*)
+            X509_get_ext_d2i(x509, forIssuer ? NID_issuer_alt_name : NID_subject_alt_name, NULL, NULL);
 
         if (altNames)
         {
@@ -652,13 +652,13 @@ BIO* CryptoNative_GetX509NameInfo(X509* x509, int32_t nameType, int32_t forIssue
                     {
                         BIO* b = BIO_new(BIO_s_mem());
                         ASN1_STRING_print_ex(b, str, ASN1_STRFLGS_UTF8_CONVERT);
-                        sk_GENERAL_NAME_free(altNames);
+                        GENERAL_NAMES_free(altNames);
                         return b;
                     }
                 }
             }
 
-            sk_GENERAL_NAME_free(altNames);
+            GENERAL_NAMES_free(altNames);
         }
     }