The keyword elseif should be used instead of else if so that all control keywords look like single words.

This was a mess, is now standardized across the codebase, except for a few 3rd-party libs. 

See #30799.


git-svn-id: https://develop.svn.wordpress.org/trunk@31090 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/install.php

@@ -254,7 +254,7 @@ switch($step) {
 			// TODO: poka-yoke
 			display_setup_form( __( 'Your passwords do not match. Please try again.' ) );
 			$error = true;
-		} else if ( empty( $admin_email ) ) {
+		} elseif ( empty( $admin_email ) ) {
 			// TODO: poka-yoke
 			display_setup_form( __( 'You must provide an email address.' ) );
 			$error = true;