This fixes several issues to how whitespace was formatted related to
comments in SQL formatter:

 - A line after the comment would get an additional leading space, this
   was especially visible for multi-line comments. For example:
   ```
   -- comment
   CREATE TABLE ...
   ```
   Would be formatted as:
   ```
   -- comment
    CREATE TABLE ...
   ```
 - An inline comment would be indented and placed on a separate line.
   For example:
   ```
   CREATE TABLE products (
       category_id INTEGER, -- lookup in categories table
       color VARCHAR(50),
   )
   ```
   Would be formatted as:
   ```
   CREATE TABLE products (
       category_id INTEGER,
       -- lookup in categories table
   color VARCHAR(50),
   )
   ```

This fixes those issues in by patching these specific cases.