informationpanel: prevent a crash when creating video preview panel and a media file is selected

To reproduce the crash:
- Open Dolphin, disable information panel and close Dolphin
- Re-open Dolphin
- Select a video file
- Enable information panel
- Crash

Problem is that some elements of the MediaWidget panel are created when the widget is shown, in `showEvent`  (`m_seekSlider` and `m_topLayout`), and these elements are called before being created.

This MR fixes 2 different crashes:
- Crash creating panel when a video file is selected (call to `m_seekSlider` before its creation)
- Crash creating panel when a video file is selected and autoplay enabled (call to `m_topLayout` before its creation)

1 files changed, 2 insertions, 4 deletions

diff --git a/src/panels/information/informationpanelcontent.cpp b/src/panels/information/informationpanelcontent.cpp
index afca9a76c..285ce3ae9 100644
--- a/src/panels/information/informationpanelcontent.cpp
+++ b/src/panels/information/informationpanelcontent.cpp
@@ -501,10 +501,8 @@ void InformationPanelContent::adjustWidgetSizes(int width)
     // try to increase the preview as large as possible
     m_preview->setSizeHint(QSize(maxWidth, maxWidth));
 
-    if (m_mediaWidget->isVisible()) {
-        // assure that the size of the video player is the same as the preview size
-        m_mediaWidget->setVideoSize(QSize(maxWidth, maxWidth));
-    }
+    // assure that the size of the video player is the same as the preview size
+    m_mediaWidget->setVideoSize(QSize(maxWidth, maxWidth));
 }
 
 #include "moc_informationpanelcontent.cpp"