Coding Standards: Use strict comparison where static strings are involved.

This reduces the number of `WordPress.PHP.StrictComparisons.LooseComparison` issues in half, from 1897 to 890.

Includes minor code layout fixes for better readability.

See #49542.

git-svn-id: https://develop.svn.wordpress.org/trunk@47808 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/user-edit.php

@@ -204,7 +204,7 @@ switch ( $action ) {
 		<?php endif; ?>
 		<?php if ( isset( $_GET['error'] ) ) : ?>
 <div class="notice notice-error">
-			<?php if ( 'new-email' == $_GET['error'] ) : ?>
+			<?php if ( 'new-email' === $_GET['error'] ) : ?>
 	<p><?php _e( 'Error while saving the new email address. Please try again.' ); ?></p>
 	<?php endif; ?>
 </div>