Simplify the credits page with an if/else statment

[ramiy]

in the current page, if we don't receive any data from dotorg API, we exit;.

This can be replaced with a simple if/else statement.

A simple message if no result returned, or a list of contributors if we did get the results from the API.

[ramiy]

Sorry, this is the latest patch

[ramiy]

This patch fixes the unclosed <div> when no result receive from the API.

Also, we don't need to all wp-admin/admin-footer.php twice, and we don't need to use the 'exit;' function.

[ocean90]

In 37434:

Credits: Add a missing closing tag.

Props ramiy for initial patch.
Fixes #35911.

[ramiy]

@ocean90 please review the patch again.

Currently we call the admin-footer.php twice, and use the exit function. It's redundant.

---

The current code:

if ( ! $credits ) {
	...
	...
	include( ABSPATH . 'wp-admin/admin-footer.php' );
	exit;
}

...
...

include( ABSPATH . 'wp-admin/admin-footer.php' );

The new code:

if ( ! $credits ) {
	...
	...
} else {
	...
	...
}

include( ABSPATH . 'wp-admin/admin-footer.php' );