Fixed bug 301 by not setting BodyAsFile to null after first use

[rwwilden]

#301

[codecov]

Codecov Report

Merging #302 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #302      +/-   ##
==========================================
- Coverage    80.1%   80.09%   -0.01%     
==========================================
  Files         109      109              
  Lines        4357     4356       -1     
==========================================
- Hits         3490     3489       -1     
  Misses        867      867

Impacted Files	Coverage Δ
src/WireMock.Net/ResponseBuilders/Response.cs	95.19% <ø> (-0.03%)	⬇️

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[StefH]

Thanks. I did add an extra unit-test to test this scenario.

[codecov]

Codecov Report

Merging #302 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #302      +/-   ##
==========================================
- Coverage    80.1%   80.09%   -0.01%     
==========================================
  Files         109      109              
  Lines        4357     4356       -1     
==========================================
- Hits         3490     3489       -1     
  Misses        867      867

Impacted Files	Coverage Δ
src/WireMock.Net/ResponseBuilders/Response.cs	95.19% <ø> (-0.03%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update af46a49...2e1a207. Read the comment docs.