Kill trailing whitespace in ruby files

test/unit/downloads/file_test.rb

@@ -8,32 +8,32 @@ module Downloads
         @tempfile = Tempfile.new("danbooru-test")
         @download = Downloads::File.new(@source, @tempfile.path)
       end
-    
+
       teardown do
         @tempfile.close
       end
-    
+
       should "stream a file from an HTTP source" do
         @download.http_get_streaming do |resp|
           assert_equal("200", resp.code)
           assert(resp["Content-Length"].to_i > 0, "File should be larger than 0 bytes")
         end
       end
-    
+
       should "throw an exception when the file is larger than the maximum" do
         assert_raise(Downloads::File::Error) do
           @download.http_get_streaming(:max_size => 1) do |resp|
           end
         end
       end
-    
+
       should "store the file in the tempfile path" do
         @download.download!
         assert_equal(@source, @download.source)
         assert(::File.exists?(@tempfile.path), "temp file should exist")
         assert(::File.size(@tempfile.path) > 0, "should have data")
       end
-    
+
       should "initialize the content type" do
         @download.download!
         assert_match(/image\/gif/, @download.content_type)