Simplify check for writing errors to ErrorOutput

[lancoLiu]

No description provided.

[codecov]

Codecov Report

Merging #983 (b0d2b84) into master (1cac10b) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #983      +/-   ##
==========================================
- Coverage   98.20%   98.10%   -0.10%     
==========================================
  Files          46       46              
  Lines        2057     2056       -1     
==========================================
- Hits         2020     2017       -3     
- Misses         29       30       +1     
- Partials        8        9       +1     

Impacted Files	Coverage Δ
zapcore/entry.go	93.75% <100.00%> (-0.08%)	⬇️
zapcore/sampler.go	96.22% <0.00%> (-3.78%)	⬇️

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[prashantv]

Thanks for the simplification!

[prashantv]

Thanks for the contribution @lancoLiu