treewide: fit test untyped int literals in 32-bit

This enables hakurei test suite to run on 32-bit targets.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/main_test.go

@@ -701,7 +701,7 @@ type stubNixOS struct {
 }
 
 func (k *stubNixOS) getppid() int { return 0xbad }
-func (k *stubNixOS) getpid() int  { return 0xdeadbeef }
+func (k *stubNixOS) getpid() int  { return 0xdead }
 func (k *stubNixOS) getuid() int  { return 1971 }
 func (k *stubNixOS) getgid() int  { return 100 }