Image: [skip ci] Fix several clazy issues:

* Missing emit keyword on signal call ImageGui::ImageView::closeEventIgnored [-Wclazy-incorrect-emit]

src/Mod/Image/Gui/ImageView.cpp

@@ -332,7 +332,7 @@ void ImageView::closeEvent(QCloseEvent *e)
     {
         // ignore the close event
         e->ignore();
-        closeEventIgnored();	// and emit a signal that we ignored it
+        Q_EMIT closeEventIgnored();	// and emit a signal that we ignored it
     }
     else
     {

src/Mod/Image/Gui/OpenGLImageBox.cpp

@@ -188,7 +188,7 @@ void GLImageBox::paintGL()
 
     // Emit a signal for owners to draw any graphics that is needed.
     if (_image.hasValidData())
-        drawGraphics();
+        Q_EMIT drawGraphics();
 
     // flush the OpenGL graphical pipeline
     glFinish();