[ticket/10601] Cosmetic code changes

- Removed the double line before the addition
- Moved the condition of the WHERE so that both are in the same line
- Removed TABs from the black lines
- Used double quotes instead of escaped single quotes.

PHPBB3-10601

phpBB/install/database_update.php

@@ -2750,13 +2750,11 @@ function change_database_data(&$no_updates, $version)
 				$config->set('site_home_text', '');
 			}
 
-			
 			// ticket/10601: Make inbox default. Add basename to ucp's pm category
 			// Check if this was already applied
 			$sql = 'SELECT module_id, module_basename, parent_id, left_id, right_id 
 					FROM ' . MODULES_TABLE . '
-					WHERE 
-					module_basename = \'ucp_pm\'
+					WHERE module_basename = "ucp_pm"
 					ORDER BY module_id';
 			$result = $db->sql_query_limit($sql, 1);