fix specs

Author: Saidbek

lib/rubygems/package.rb

@@ -441,13 +441,13 @@ def extract_tar_gz(io, destination_dir, pattern = "*") # :nodoc:
         full_name = entry.full_name
         next unless File.fnmatch pattern, full_name, File::FNM_DOTMATCH
 
-        destination = install_location full_name, destination_dir
-
         if invalid_windows_filename?(full_name)
           gem_name = @spec ? @spec.full_name : "unknown"
           raise Gem::Package::InvalidWindowsFileNameError.new(full_name, gem_name)
         end
 
+        destination = install_location full_name, destination_dir
+
         if entry.symlink?
           link_target = entry.header.linkname
           real_destination = link_target.start_with?("/") ? link_target : File.expand_path(link_target, File.dirname(destination))

test/rubygems/test_gem_package.rb

@@ -1370,7 +1370,7 @@ def test_build_warns_on_invalid_windows_filename
       package.build
     end
 
-    assert_match(/filename 'lib\/file:name\.rb' contains characters that are invalid on Windows/, ui.error)
+    assert_match(%r{filename 'lib/file:name\.rb' contains characters that are invalid on Windows}, ui.error)
     assert_match(/This gem may fail to install on Windows/, ui.error)
     assert_path_exist spec.file_name
   end