Minispade code wrapper should deal with last-line being a comment

[raghurajah]

If the code to be registered has a comment on the last line, the closing part of the registration wrapper becomes a comment as well, resulting in invalid code.

alert('hello world');
// Hello World

results in,

minispade.register('module_id', function() {alert('hello world');
// Hello World});

Added a new line to the code during registration to deal with a comment as the last line of the code. Now, the registration looks like this,

minispade.register('module_id', function() {alert('hello world');
// Hello World
});