post.php suppressed E_WARNING

[Mittineague]

Using the Error Reporting plugin I get

E_WARNING Couldn't find constant DOING_AUTOSAVE at ...../wp-includes/post.php (3471)

function wp_save_post_revision( $post_id ) {
	// We do autosaves manually with wp_create_post_autosave()
	if ( @constant( 'DOING_AUTOSAVE' ) )
		return;

Would it not be easy enough to do a defined() before the constant() and eliminate the need for suppression?

(trivial patch)

[12265]