Replace diffing library. .
Note: mandatory check (NEED_CHECK) was skipped
@@ -127,8 +127,8 @@ ALLOW .* -> vendor/github.com/prometheus/common
# ZooKeeper client
ALLOW .* -> vendor/github.com/samuel/go-zookeeper
-# text diffing and patching
-ALLOW .* -> vendor/github.com/sergi/go-diff
+# Test diffing.
+ALLOW .* -> vendor/github.com/pmezard/go-difflib
# statsd client library
ALLOW .* -> vendor/github.com/smira/go-statsd
