General: Fix some precision alignment formatting warnings.

The WPCS `WordPress.WhiteSpace.PrecisionAlignment` rule throws warnings for a bunch of code that will likely cause issues for `wpcbf`. Fixing these manually beforehand gives us better auto-fixed results later.

See #41057.



git-svn-id: https://develop.svn.wordpress.org/trunk@42228 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-walker.php

@@ -251,9 +251,9 @@ class Walker {
 			foreach ( $children_elements as $orphans )
 				foreach ( $orphans as $op )
 					$this->display_element( $op, $empty_array, 1, 0, $args, $output );
-		 }
+		}
 
-		 return $output;
+		return $output;
 	}
 
 	/**