Xcode: cancelled build shouldn't error out ninja
Xcode: cancelled build shouldn't error out ninja

Don't report as error in ninja builds when Xcode interrupts the build
(either due to another error or due to user request).

c72578/poedit,alexhenrie/poedit,nawawi/poedit,PKRoma/poedit,alexhenrie/poedit,nawawi/poedit,nawawi/poedit,PKRoma/poedit,vslavik/poedit,alexhenrie/poedit,PKRoma/poedit,c72578/poedit,c72578/poedit,alexhenrie/poedit,nawawi/poedit,alexhenrie/poedit,c72578/poedit,vslavik/poedit,PKRoma/poedit,nawawi/poedit,vslavik/poedit,vslavik/poedit,vslavik/poedit,PKRoma/poedit,c72578/poedit