Fix for CID 299847 memory leak on error case

Author: JacobBarthelmeh

src/x509.c

@@ -1549,11 +1549,13 @@ int wolfSSL_X509V3_EXT_print(WOLFSSL_BIO *out, WOLFSSL_X509_EXTENSION *ext,
                         if ((valLen = XSNPRINTF(val, len, "%*s%s,",
                                       indent, "", str->strData))
                             >= len)
+                            XFREE(val, NULL, DYNAMIC_TYPE_TMP_BUFFER);
                             return rc;
                     } else {
                         if ((valLen = XSNPRINTF(val, len, "%*s%s",
                                       indent, "", str->strData))
                             >= len)
+                            XFREE(val, NULL, DYNAMIC_TYPE_TMP_BUFFER);
                             return rc;
                     }
                     if (tmpLen + valLen > tmpSz) {