already_matched: add missing context

[msimerson]

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[msimerson]

$ npm publish
git npm notice 
npm notice 📦  haraka-plugin-known-senders@1.0.7
npm notice === Tarball Contents === 
npm notice 1.1kB package.json            
npm notice 137B  .codeclimate.yml        
npm notice 296B  .eslintrc.yaml          
npm notice 265B  .travis.yml             
npm notice 336B  appveyor.yml            
npm notice 601B  Changes.md              
npm notice 9.5kB index.js                
npm notice 1.1kB LICENSE                 
npm notice 3.7kB README.md               
npm notice 105B  config/known-senders.ini
npm notice 9.4kB test/index.js           
npm notice === Tarball Details === 
npm notice name:          haraka-plugin-known-senders             
npm notice version:       1.0.7                                   
npm notice package size:  7.1 kB                                  
npm notice unpacked size: 26.4 kB                                 
npm notice shasum:        7c7954aeb732990f9950f6f1adb35a0514725e30
npm notice integrity:     sha512-6HE+L6FxH2Bh4[...]kFJKy3s1uyOLw==
npm notice total files:   11                                      
npm notice 
+ haraka-plugin-known-senders@1.0.7