title: implicit conversion of an Objective-C pointer to 'void *' is disallowed with ARC - sqlite3
body: <p>I am getting that error when I try to do this using ARC with the following SQLite code:</p>
  
  <pre><code>NSMutableArray *rows = [[NSMutableArray alloc] init];
  sqlite3_exec(database, "select distinct category from billy", callback, rows, NULL);
  </code></pre>
  
  <p>Anyone know how to fix this?</p>