Coding Standards: Use strict comparison in get_posts_by_author_sql().

Follow-up to [13576], [25669].

Props aristath, poena, afercia, SergeyBiryukov.
See #62279.

git-svn-id: https://develop.svn.wordpress.org/trunk@59596 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/post.php

@@ -7358,7 +7358,7 @@ function get_posts_by_author_sql( $post_type, $full = true, $post_author = null,
 				$id = get_current_user_id();
 				if ( null === $post_author || ! $full ) {
 					$post_status_sql .= " OR post_status = 'private' AND post_author = $id";
-				} elseif ( $id == (int) $post_author ) {
+				} elseif ( $id === (int) $post_author ) {
 					$post_status_sql .= " OR post_status = 'private'";
 				} // Else none.
 			} // Else none.