fix(frontend): Main process crashed when open kylin-software-center to install applications.

Description: 修复点击应用安装时ukui-search主进程崩溃的问题

Log: 修复点击应用安装时ukui-search主进程崩溃的问题

src/control/search-detail-view.cpp

@@ -587,7 +587,8 @@ bool SearchDetailView::installAppAction(const QString & name)
 {
     //打开软件商店下载此软件
     QProcess process;
-    process.startDetached(QString("kylin-software-center -find %1").arg(name));
+    bool res = process.startDetached(QString("kylin-software-center -find %1").arg(name));
+    return res;
 }
 
 void SearchDetailView::paintEvent(QPaintEvent *event) {