Fix LogRequest : Index Out Of Bounds

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #328 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #328      +/-   ##
==========================================
- Coverage   80.08%   80.05%   -0.03%     
==========================================
  Files         111      111              
  Lines        4423     4418       -5     
==========================================
- Hits         3542     3537       -5     
  Misses        881      881

Impacted Files	Coverage Δ
src/WireMock.Net/Owin/WireMockMiddleware.cs	94.17% <100%> (-0.27%)	⬇️

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