probablycorey/mini_magick — pull request #61 by awstin (2011-12-01 14:27:04+00:00)
Title: "tool" argument in "combine_options" method should have a default value

```
ArgumentError: wrong number of arguments (0 for 1)
/Users/dumitru/Dropbox/code/gems/mini_magick/lib/mini_magick.rb:323:in `combine_options'
```
```ruby
# was throwing the above error
image.combine_options do |c|
end
```