fix for no extract results from uri check

lib/vagrant/actions/box/download.rb

@@ -48,7 +48,7 @@ module Vagrant
 
         def with_tempfile
           logger.info "Creating tempfile for storing box file..."
-	  # create, write only, fail if the file exists
+          # create, write only, fail if the file exists
           File.open(box_temp_path, File::WRONLY|File::EXCL|File::CREAT) do |tempfile|
             yield tempfile
           end

lib/vagrant/downloaders/http.rb

@@ -8,7 +8,8 @@ module Vagrant
 
       def self.match?(uri)
         # URI.parse barfs on '<drive letter>:\\files \on\ windows'
-        URI.extract(uri).first.include?(uri)
+        uri = URI.extract(uri).first
+        uri && uri.include?(uri)
       end
         
       def download!(source_url, destination_file)

test/vagrant/actions/box/download_test.rb

@@ -89,7 +89,7 @@ class DownloadBoxActionTest < Test::Unit::TestCase
   context "tempfile" do
     should "create a tempfile in the vagrant tmp directory" do
       File.expects(:open).with { |name, bitmask| 
-	name =~ /#{Vagrant::Actions::Box::Download::BASENAME}/ &&  name =~ /#{@runner.env.tmp_path}/
+        name =~ /#{Vagrant::Actions::Box::Download::BASENAME}/ &&  name =~ /#{@runner.env.tmp_path}/
       }.once	
       @action.with_tempfile
     end

test/vagrant/downloaders/http_test.rb

@@ -39,6 +39,11 @@ class HttpDownloaderTest < Test::Unit::TestCase
       URI.expects(:extract).returns(['foo'])
       assert Vagrant::Downloaders::HTTP.match?('foo')
     end
+
+    should "return false if there are no extract results" do
+      URI.expects(:extract).returns([])
+      assert !Vagrant::Downloaders::HTTP.match?('foo')
+    end    
   end
 
   context "reporting progress" do