lib/capybara/screenshot/diff/image_compare.rb in capybara-screenshot-diff-0.14.1 vs lib/capybara/screenshot/diff/image_compare.rb in capybara-screenshot-diff-0.14.2

@@ -232,9 +232,10 @@
           old_img.height.times do |y|
             old_img.width.times do |x|
               return [x, y, x, y] unless same_color?(old_img, new_img, x, y)
             end
           end
+          nil
         end
 
         def find_left_right_and_top(old_img, new_img)
           top = @top
           bottom = @bottom