style: gofumpt all the things (#9829)

Literally `gofumpt -w .` from the top level dir. Guaranteed to be minor
style changes only and nothing else.

@imsodin per request?

lib/connections/debug.go

@@ -10,6 +10,4 @@ import (
 	"github.com/syncthing/syncthing/lib/logger"
 )
 
-var (
-	l = logger.DefaultLogger.NewFacility("connections", "Connection handling")
-)
+var l = logger.DefaultLogger.NewFacility("connections", "Connection handling")

lib/connections/limiter_test.go

@@ -21,8 +21,10 @@ import (
 	"golang.org/x/time/rate"
 )
 
-var device1, device2, device3, device4 protocol.DeviceID
-var dev1Conf, dev2Conf, dev3Conf, dev4Conf config.DeviceConfiguration
+var (
+	device1, device2, device3, device4     protocol.DeviceID
+	dev1Conf, dev2Conf, dev3Conf, dev4Conf config.DeviceConfiguration
+)
 
 func init() {
 	device1, _ = protocol.DeviceIDFromString("AIR6LPZ7K4PTTUXQSMUUCPQ5YWOEDFIIQJUG7772YQXXR5YD6AWQ")

lib/connections/metrics.go

@@ -11,14 +11,12 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 )
 
-var (
-	metricDeviceActiveConnections = promauto.NewGaugeVec(prometheus.GaugeOpts{
-		Namespace: "syncthing",
-		Subsystem: "connections",
-		Name:      "active",
-		Help:      "Number of currently active connections, per device. If value is 0, the device is disconnected.",
-	}, []string{"device"})
-)
+var metricDeviceActiveConnections = promauto.NewGaugeVec(prometheus.GaugeOpts{
+	Namespace: "syncthing",
+	Subsystem: "connections",
+	Name:      "active",
+	Help:      "Number of currently active connections, per device. If value is 0, the device is disconnected.",
+}, []string{"device"})
 
 func registerDeviceMetrics(deviceID string) {
 	// Register metrics for this device, so that counters & gauges are present even