fixes in profile change and log password check

src/core.cpp

@@ -1263,6 +1263,7 @@ void Core::switchConfiguration(const QString& profile)
     loadPath = QDir(Settings::getSettingsDirPath()).filePath(profile + TOX_EXT);
     Settings::getInstance().setCurrentProfile(profile); 
     HistoryKeeper::getInstance()->resetInstance();
+    clearPassword();
 
     start();
 }

src/historykeeper.cpp

@@ -67,7 +67,7 @@ bool HistoryKeeper::checkPassword()
     {
         if (Settings::getInstance().getEncryptLogs())
         {
-            QString dbpath = QDir(Settings::getInstance().getSettingsDirPath()).filePath("qtox_history.encrypted");
+            QString dbpath = getHistoryPath();
             return EncryptedDb::check(dbpath);
         } else {
             return true;