* remove trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rubygems/test_gem_commands_install_command.rb

@@ -451,23 +451,23 @@ ERROR:  Possible alternatives: non_existent_with_hint
     specs = spec_fetcher do |fetcher|
       fetcher.gem 'a', 2
     end
-  
+
     Gem.done_installing(&Gem::RDoc.method(:generation_hook))
-  
+
     @cmd.options[:document] = %w[rdoc ri]
     @cmd.options[:domain] = :local
     @cmd.options[:install_dir] = 'whatever'
-  
+
     a2 = specs['a-2']
     FileUtils.mv a2.cache_file, @tempdir
-  
+
     @cmd.options[:args] = %w[a]
-  
+
     use_ui @ui do
       # Don't use Dir.chdir with a block, it warnings a lot because
       # of a downstream Dir.chdir with a block
       old = Dir.getwd
-  
+
       begin
         Dir.chdir @tempdir
         assert_raises Gem::MockGemUi::SystemExitException, @ui.error do
@@ -477,9 +477,9 @@ ERROR:  Possible alternatives: non_existent_with_hint
         Dir.chdir old
       end
     end
-  
+
     wait_for_child_process_to_exit
-  
+
     assert_path_exists 'whatever/doc/a-2', 'documentation not installed'
   end