removed empty values keys from map

Author: chandrajeetn

localEvaluation/localEvaluation.go

@@ -151,7 +151,7 @@ func getValue(flagName string, user UserProperties) Variant {
 func getMapOfValue(user UserProperties) map[string]interface{} {
 	flags := make(map[string]interface{})
 	result, _ := fetch(user)
-	if len(result) != 0 {
+	if result != nil && len(result) != 0 {
 		for k, v := range result {
 			if v.Value != "" {
 				flags[k] = v.Value