dont return 400 for empty bodies

[cousinbenson]

Fixes #1409

[codecov]

Codecov Report

Merging #1410 into master will decrease coverage by 0.01%.
The diff coverage is 33.33%.

@@            Coverage Diff            @@
##           master   #1410      +/-   ##
=========================================
- Coverage   84.01%     84%   -0.02%     
=========================================
  Files          27      27              
  Lines        2071    2069       -2     
=========================================
- Hits         1740    1738       -2     
  Misses        216     216              
  Partials      115     115

Impacted Files	Coverage Δ
bind.go	87.09% <33.33%> (-0.14%)	⬇️

---

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 81a6608...c01e6f6. Read the comment docs.

[vishr]

@cousinbenson Thanks for your contribution 👍