internal: fix high cpu when backend isnt healthy

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

internal/gounicorn/gounicorn.go

@@ -83,14 +83,20 @@ func (g *GoUnicorn) healthcheck() {
 
 	// Default healthcheck is every 1 second on startup
 	// once we've been healthy once, increase to 30 seconds
-	for range time.Tick(time.Second) {
-		if check() {
-			g.log.Info("backend is alive, backing off with healthchecks")
-			g.HealthyCallback()
-			break
+	func() {
+		for {
+			select {
+			case <-time.Tick(1 * time.Second):
+				if check() {
+					g.log.Info("backend is alive, backing off with healthchecks")
+					g.HealthyCallback()
+					return
+				} else {
+					g.log.Debug("backend not alive yet")
+				}
+			}
 		}
-		g.log.Debug("backend not alive yet")
-	}
+	}()
 	for range time.Tick(30 * time.Second) {
 		check()
 	}