Correct IntlDateFormatter::formatObject params

Author: BackEndTea

ext/intl/dateformat/dateformat.stub.php

@@ -104,7 +104,7 @@ public function isLenient() {}
     public function format($datetime) {}
 
     /**
-     * @param IntlCalendar|DateTime $datetime
+     * @param IntlCalendar|DateTimeInterface $datetime
      * @param array|int|string|null $format
      * @return string|false
      * @alias datefmt_format_object

ext/intl/dateformat/dateformat_format_object.cpp

@@ -190,7 +190,7 @@ U_CFUNC PHP_FUNCTION(datefmt_format_object)
 		}
 	} else {
 		intl_error_set(NULL, status, "datefmt_format_object: the passed object "
-				"must be an instance of either IntlCalendar or DateTime",
+				"must be an instance of either IntlCalendar or DateTimeInterface",
 				0);
 		RETURN_FALSE;
 	}

ext/intl/tests/dateformat_formatObject_error.phpt

@@ -31,7 +31,7 @@ var_dump(IntlDateFormatter::formatObject($cal, ""));
 
 ?>
 --EXPECTF--
-Warning: IntlDateFormatter::formatObject(): datefmt_format_object: the passed object must be an instance of either IntlCalendar or DateTime in %s on line %d
+Warning: IntlDateFormatter::formatObject(): datefmt_format_object: the passed object must be an instance of either IntlCalendar or DateTimeInterface in %s on line %d
 bool(false)
 
 Warning: IntlDateFormatter::formatObject(): datefmt_format_object: bad IntlCalendar instance: not initialized properly in %s on line %d