whoopsie regression

USN-4170-1 fixed a vulnerability in Whoopsie. The update caused Whoopsie to
crash when sending reports. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Kevin Backhouse discovered Whoopsie incorrectly handled very large crash
reports. A local attacker could possibly use this issue to cause a denial
of service, expose sensitive information or execute code as the whoopsie
user.