Improve status table implementation (#879)

* Remove superfluous defer calls

* Improve status table implementation as well

This would probably only help with large, high-traffic installs

modules/sync/status_pool_test.go

@@ -0,0 +1,19 @@
+package sync
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_StatusTable(t *testing.T) {
+	table := NewStatusTable()
+
+	assert.False(t, table.IsRunning("xyz"))
+
+	table.Start("xyz")
+	assert.True(t, table.IsRunning("xyz"))
+
+	table.Stop("xyz")
+	assert.False(t, table.IsRunning("xyz"))
+}