update changelog and watch; remove trailing space

debian/changelog

@@ -1,3 +1,11 @@
+ukui-greeter (1.2.5-1) unstable; urgency=medium
+
+  * New upstream bugfix release:
+    - Fix the problem on highdpi screen.
+  * debian/watch: update to monitor the upstream orig.tar.gz.
+
+ -- handsome_feng <jianfengli@ubuntukylin.com>  Tue, 07 Apr 2020 14:43:43 +0800
+
 ukui-greeter (1.2.4-1) unstable; urgency=medium
 
   * New upstream bugfix release:

debian/watch

@@ -1,3 +1,2 @@
 version=4
-opts=filenamemangle=s/.+\/v?(\d\S+)\.tar\.gz/ukui-greeter-$1\.tar\.gz/ \
-  https://github.com/ukui/ukui-greeter/releases .*/v?(\d\S+)\.tar\.gz
+https://github.com/ukui/ukui-greeter/releases .*/ukui-greeter_(\d\S+)\.orig\.tar\.gz

ukui-greeter/greeter/main.cpp

@@ -89,12 +89,12 @@ void waitMonitorsReady()
 int main(int argc, char *argv[])
 {
     qInstallMessageHandler(outputMessage);
-    
+
 #if(QT_VERSION>=QT_VERSION_CHECK(5,6,0))
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
 #endif
-    
+
     QApplication a(argc, argv);
     a.setQuitOnLastWindowClosed(true);