Simplify SIGINT handling code. NFC

src/main.go

@@ -385,10 +385,7 @@ func Main() {
 			log.Println("serve: ready")
 		}
 
-		interrupt := make(chan struct{})
-		OnInterrupt(func() { interrupt <- struct{}{} })
-		<-interrupt
-
-		log.Println("exiting gracefully")
+		WaitForInterrupt()
+		log.Println("serve: exiting")
 	}
 }

src/signal_other.go

@@ -6,6 +6,8 @@ func OnReload(handler func()) {
 	// not implemented
 }
 
-func OnInterrupt(handler func()) {
-	// not implemented
+func WaitForInterrupt() {
+	for {
+		// Ctrl+C not supported
+	}
 }

src/signal_posix.go

@@ -19,12 +19,9 @@ func OnReload(handler func()) {
 	}()
 }
 
-func OnInterrupt(handler func()) {
+func WaitForInterrupt() {
 	sigint := make(chan os.Signal, 1)
 	signal.Notify(sigint, syscall.SIGINT)
-	go func() {
-		<-sigint
-		signal.Stop(sigint)
-		handler()
-	}()
+	<-sigint
+	signal.Stop(sigint)
 }