Do not alter the user's debug and expiration settings when changing temporary log dir setting

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>

src/libsync/logger.cpp

@@ -234,10 +234,9 @@ QString Logger::temporaryFolderLogDirPath() const
 void Logger::setupTemporaryFolderLogDir()
 {
     auto dir = temporaryFolderLogDirPath();
-    if (!QDir().mkpath(dir))
+    if (!QDir().mkpath(dir)) {
         return;
-    setLogDebug(true);
-    setLogExpire(4 /*hours*/);
+    }
     setLogDir(dir);
     _temporaryFolderLogDir = true;
 }
@@ -249,8 +248,6 @@ void Logger::disableTemporaryFolderLogDir()
 
     enterNextLogFile("nextcloud.log", LogType::Log);
     setLogDir(QString());
-    setLogDebug(false);
-    setLogFile(QString());
     _temporaryFolderLogDir = false;
 }