[thrift] erlang dialyzer error

Summary: impossible pattern matches are never good

Reviewed By: cpiro

Test Plan: make dialyzer

Revert Plan: sure


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665525 13f79535-47bb-0310-9956-ffa450edef68
1 file changed