call onConfigChange callback only if it is not nil, so i really become

an optional parameter.
2018-05-16 14:22:57 +03:00 · 2018-05-16 14:22:57 +03:00 · e919dff7ac
parent 15738813a0
commit e919dff7ac
1 changed files with 3 additions and 1 deletions
--- a/viper.go
+++ b/viper.go
@ -289,7 +289,9 @@ func (v *Viper) WatchConfig() {
 							if err != nil {
 								log.Println("error:", err)
 							}
-							v.onConfigChange(event)
+							if v.onConfigChange != nil {
+								v.onConfigChange(event)
+							}
 						}
 					}
 				case err := <-watcher.Errors: