Fix #52

[ethe]

No description provided.

[codecov]

Codecov Report

Merging #55 into master will increase coverage by 0.01%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master      #55      +/-   ##
==========================================
+ Coverage   80.52%   80.53%   +0.01%     
==========================================
  Files          35       35              
  Lines        3476     3478       +2     
==========================================
+ Hits         2799     2801       +2     
  Misses        677      677

Impacted Files	Coverage Δ
thriftpy2/hook.py	94.44% <ø> (ø)	⬆️
thriftpy2/thrift.py	75.74% <66.66%> (+0.18%)	⬆️

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