wrong filter used in get_post_modified_time()

[Denis-de-Bernardy]

related to #9730

patch attached

[westi]

This has been like this for a long time.

So changing it breaks backwards compatibility.

However, I don't think that the current hook combination it causes could be used reliably by a plugin so I think it is safe to change.

[Denis-de-Bernardy]

Yeah... it gets applied twice:

DB:~/Sites/wp $ grep -r "'get_the_modified_time'" * | grep -v svn
wp-includes/general-template.php:	return apply_filters('get_the_modified_time', $the_time, $d);
wp-includes/general-template.php:	return apply_filters('get_the_modified_time', $time, $d, $gmt);

[ryan]

(In [11347]) Use get_post_modified_time filter in get_post_modified_time(). Props Denis-de-Bernardy. fixes #9734