Fix crash when receiving a non-2xx response for an Http request in C#.
Fix crash when receiving a non-2xx response for an Http request in C#.

blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon