tree 047aaf8d760645ed57aa297837fb577e4f71bdcc
parent b6d11360b98f0c399d0edb137a0b79439c21d063
author Daniel Dunbar <daniel_dunbar@apple.com> 1493193969 -0700
committer Daniel Dunbar <daniel_dunbar@apple.com> 1493195619 -0700

[BuildSystem] Fix a situation where we could fail to cancel a command.

 - If we were in the middle of launching a process, it was possible we could end
   up launching it after we were cancelled and without ever trying to signal it
   to interrupt.