Typo fix: umknown -> unknown

Author: kaplanlior

ext/mysqlnd/mysqlnd.c

@@ -527,7 +527,7 @@ mysqlnd_connect_run_authentication(
 
 				if (!auth_plugin) {
 					php_error_docref(NULL TSRMLS_CC, E_WARNING, "The server requested authentication method unknown to the client [%s]", requested_protocol);
-					SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, "The server requested authentication method umknown to the client");
+					SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, "The server requested authentication method unknown to the client");
 					break;
 				}
 			}
@@ -2162,7 +2162,7 @@ MYSQLND_METHOD(mysqlnd_conn_data, change_user)(MYSQLND_CONN_DATA * const conn,
 
 				if (!auth_plugin) {
 					php_error_docref(NULL TSRMLS_CC, E_WARNING, "The server requested authentication method unknown to the client [%s]", requested_protocol);
-					SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, "The server requested authentication method umknown to the client");
+					SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, "The server requested authentication method unknown to the client");
 					break;
 				}
 			}