clazy: Combine multiple calls to QString::arg in mythnews.

Each call to QString::arg causes the Qt libraries to scan the string
to find the lowest numbered place marker, and it causes a memory
allocate to store the resulting integrated string. Consecutive calls
to ::arg with string arguments can be combined into a single call,
thus reducing the number of required string scans and (more
importantly) memory allocations.

mythplugins/mythnews/mythnews/mythnewsconfig.cpp

@@ -48,7 +48,7 @@ void MythNewsConfig::populateSites(void)
     QMutexLocker locker(&m_lock);
 
     QString filename = QString("%1%2")
-        .arg(GetShareDir()).arg("mythnews/news-sites.xml");
+        .arg(GetShareDir(), "mythnews/news-sites.xml");
 
     QFile xmlFile(filename);
 

mythplugins/mythnews/mythnews/newssite.cpp

@@ -64,7 +64,7 @@ void NewsSite::retrieve(void)
     m_errorString.clear();
     m_updateErrorString.clear();
     m_articleList.clear();
-    QString destFile = QString("%1/%2").arg(m_destDir).arg(m_name);
+    QString destFile = QString("%1/%2").arg(m_destDir, m_name);
     GetMythDownloadManager()->queueDownload(m_url, destFile, this, true);
 }
 
@@ -442,7 +442,7 @@ void NewsSite::parseRSS(const QDomDocument& domDoc)
 
             LOG(VB_GENERAL, LOG_DEBUG,
                 QString("parseRSS found media:content: medium: %1, type: %2, url: %3")
-                        .arg(medium).arg(type).arg(url2));
+                        .arg(medium, type, url2));
 
             // if this is an image use it as the thumbnail if we haven't found one yet
             if (thumbnail.isEmpty() && (medium == "image" || isImage(type)))