Merge pull request #442 from yangxingpping/main

vs2019下example退出之后程序会崩溃

example/src/helper/Log.cpp

@@ -207,3 +207,8 @@ void Log::setup(const QString &app,int level)
     qInfo()<<"[LOG_PATH]"<<g_file_path;
     qInfo()<<"===================================================";
 }
+
+void Log::teardown()
+{
+    qInstallMessageHandler(0);
+}

example/src/helper/Log.h

@@ -6,6 +6,7 @@ namespace Log
 {
     QString prettyProductInfoWrapper();
     void setup(const QString &app,int level = 4);
+    void teardown();
 }
 
 #endif // LOG_H

example/src/main.cpp

@@ -82,5 +82,6 @@ int main(int argc, char *argv[])
     if (exec == 931) {
         QProcess::startDetached(qApp->applicationFilePath(), QStringList());
     }
+    Log::teardown();
     return exec;
 }