PHPCS: fix up the code base [3] - strict comparisons (second try)

Fixes relate to the following rules:
* Use strict comparisons.

This fix was previously merged already via 209, but this got undone by the master-merge-back in 207.

Author: jrfnl

src/Scaffold_Command.php

@@ -430,7 +430,7 @@ public function _s( $args, $assoc_args ) {
 		}
 
 		$response_code = wp_remote_retrieve_response_code( $response );
-		if ( 200 != $response_code ) {
+		if ( 200 !== (int) $response_code ) {
 			WP_CLI::error( "Couldn't create theme (received {$response_code} response)." );
 		}