Fixing a bug that breaks the handling of collisions.

lib/homesick/actions/file_actions.rb

@@ -75,7 +75,7 @@ module Homesick
         when :conflict
           say_status :conflict, "#{destination} exists", :red unless options[:quiet]
 
-          if collision_accepted?
+          if collision_accepted?(destination)
             FileUtils.rm_r destination, force: true unless options[:pretend]
             FileUtils.ln_s source, destination, force: true unless options[:pretend]
           end

lib/homesick/utils.rb

@@ -132,7 +132,8 @@ module Homesick
       first_p.mtime > second_p.mtime && !first_p.symlink?
     end
 
-    def collision_accepted?
+    def collision_accepted?(destination)
+      fail "Argument must be an instance of Pathname, #{destination.class.name} given" unless destination.instance_of?(Pathname)
       options[:force] || shell.file_collision(destination) { source }
     end