Fix some clazy warning

messageviewer/src/header/contactdisplaymessagememento.cpp

@@ -58,8 +58,7 @@ void ContactDisplayMessageMemento::slotSearchJobFinished(KJob *job)
 
         const KContacts::Addressee addressee = searchJob->contacts().at(0);
         processAddress(addressee);
-        searchPhoto(searchJob->contacts());
-        if (!mPhoto.isEmpty()) {
+        if (!searchPhoto(searchJob->contacts())) {
             //We have a data raw => we can update message
             if (mPhoto.isIntern()) {
                 Q_EMIT update(MimeTreeParser::Delayed);

messageviewer/src/viewer/viewer_p.cpp

@@ -2334,7 +2334,9 @@ void ViewerPrivate::slotDelayPrintPreview()
     connect(dialog, &QPrintPreviewDialog::paintRequested, this, [=](QPrinter *printing) {
         QApplication::setOverrideCursor(Qt::WaitCursor);
 
-        mViewer->execPrintPreviewPage(printing, 10000); // 10 seconds
+        if (!mViewer->execPrintPreviewPage(printing, 10000)) { // 10 seconds
+            qCWarning(MESSAGEVIEWER_LOG) << " Impossible to generate preview";
+        }
         QApplication::restoreOverrideCursor();
     });
 
@@ -3154,7 +3156,7 @@ DKIMViewerMenu *ViewerPrivate::dkimViewerMenu()
                 connect(mDkimViewerMenu, &DKIMViewerMenu::recheckSignature, this, [this]() {
                     MessageViewer::DKIMManager::self()->checkDKim(mMessageItem);
                 });
-                connect(mDkimViewerMenu, &DKIMViewerMenu::updateDkimKey, this, [this]() {
+                connect(mDkimViewerMenu, &DKIMViewerMenu::updateDkimKey, this, []() {
                     qWarning() <<" Unimplemented yet updateDkimKey";
                 });
                 connect(mDkimViewerMenu, &DKIMViewerMenu::showDkimRules, this, [this]() {