pkg/ifuzz: fix generate/build

Currently the commands we have in go:generate first create an empty file
and then write final contents. This breaks any parallel builds of the source.
Even running go generate ./... does not work.
Write output files atomically.

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/fuchsia/fidlgen/main.go b/sys/fuchsia/fidlgen/main.go
index ab2bcf0cd..315d6a466 100644
--- a/sys/fuchsia/fidlgen/main.go
+++ b/sys/fuchsia/fidlgen/main.go
@@ -91,7 +91,7 @@ func main() {
 			return pos.File == file
 		}))
 
-		if err := osutil.WriteFile(file, desc); err != nil {
+		if err := osutil.WriteFileAtomically(file, desc); err != nil {
 			tool.Fail(err)
 		}
 	}