Coding Standards: Use strict comparison in `wp-includes/class-wp-image-editor.php`.

Follow-up to [22094].

Props aristath, poena, afercia, SergeyBiryukov.
See #58831.
Built from https://develop.svn.wordpress.org/trunk@56361


git-svn-id: http://core.svn.wordpress.org/trunk@55873 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-image-editor.php

@@ -353,7 +353,7 @@ abstract class WP_Image_Editor {
 		 * Check to see if specified mime-type is the same as type implied by
 		 * file extension. If so, prefer extension from file.
 		 */
-		if ( ! $mime_type || ( $file_mime == $mime_type ) ) {
+		if ( ! $mime_type || ( $file_mime === $mime_type ) ) {
 			$mime_type = $file_mime;
 			$new_ext   = $file_ext;
 		}

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56360';
+$wp_version = '6.4-alpha-56361';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.