Remove redundant close of /dev/null in spawn.go

internal/lib/spawn.go

@@ -52,10 +52,6 @@ func (c *MyConfig) Spawner() {
 		if err != nil {
 			log.Printf("Unable to spawn %s: %s", prg[0], err)
 		}
-
-		// Close file errors we don't handle :) at all.
-		_ = devnullR.Close()
-		_ = devnullW.Close()
 	}
 }