build: fix build on darwin

macOS names the stat ctime field Ctimespec rather than Ctim, so stat.go
failed to compile on a Mac. Split the darwin case into its own file and
exclude darwin from the generic variant. Deploys are unaffected.

1 files changed, 2 insertions, 2 deletions

diff --git a/app/stat.go b/app/stat.go
index a5bebcc..8f0d231 100755
--- a/app/stat.go
+++ b/app/stat.go
@@ -1,5 +1,5 @@
-//go:build !freebsd
-// +build !freebsd
+//go:build !freebsd && !darwin
+// +build !freebsd,!darwin
 
 package app