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-rw-r--r--actionpack/lib/sprockets/helpers/rails_helper.rb3
1 files changed, 1 insertions, 2 deletions
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index 37c37604d5..8f0e0f8ee1 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -157,8 +157,7 @@ module Sprockets
def rewrite_extension(source, dir, ext)
source_ext = File.extname(source)
if ext && source_ext != ".#{ext}"
- asset = asset_environment[source]
- if !source_ext.empty? && asset &&
+ if !source_ext.empty? && (asset = asset_environment[source]) &&
asset.pathname.to_s =~ /#{source}\Z/
source
else