Fix Map Panic

model/experiments.go

@@ -1,10 +1,13 @@
 package model
 
+import "sync"
+
 // Experiments are optional functionality that can be enabled/disabled by an application either completely or individually.
 // examples of experiments include File Sharing, Profile Images and Groups.
 type Experiments struct {
 	enabled     bool
 	experiments map[string]bool
+	lock        sync.Mutex
 }
 
 // InitExperiments encapsulates a set of experiments separate from their storage in GlobalSettings.
@@ -24,6 +27,10 @@ func (e *Experiments) IsEnabled(experiment string) bool {
 		// todo handle default-enabled functionality
 		return false
 	}
+
+	// go will sometimes panic if we do not lock this read-only map...
+	e.lock.Lock()
+	defer e.lock.Unlock()
 	enabled, exists := e.experiments[experiment]
 	if !exists {
 		return false