fix: don't remove log dir on startup

Changelog.md

@@ -25,6 +25,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Crash when failing to match necessary html element
 * Crash in message.combineParts when copying nil slice
 * Handle double charset better by using local ParseMediaType instead of mime.ParseMediaType
+* Don't remove log dir
 
 ## [v1.2.7] Donghai-hotfix - beta (2020-05-07)
 

pkg/config/config.go

@@ -110,6 +110,7 @@ func (c *Config) ClearOldData() error {
 		fileName := filepath.Base(filePath)
 		return (fileName != c.cacheVersion &&
 			!logFileRgx.MatchString(fileName) &&
+			filePath != c.GetLogDir() &&
 			filePath != c.GetTLSCertPath() &&
 			filePath != c.GetTLSKeyPath() &&
 			filePath != c.GetEventsPath() &&