[PhononWidget] Fix layout warning

`controlsLayout` should not be a direct child of the widget, since it
already has `m_topLayout` as layout.

This fixes the following warning:

    QLayout: Attempting to add QLayout "" to PhononWidget "", which already has a layout

1 files changed, 1 insertions, 1 deletions

diff --git a/src/panels/information/phononwidget.cpp b/src/panels/information/phononwidget.cpp
index 95f535713..77e066d37 100644
--- a/src/panels/information/phononwidget.cpp
+++ b/src/panels/information/phononwidget.cpp
@@ -106,7 +106,7 @@ void PhononWidget::showEvent(QShowEvent *event)
         m_topLayout = new QVBoxLayout(this);
         m_topLayout->setContentsMargins(0, 0, 0, 0);
 
-        QHBoxLayout *controlsLayout = new QHBoxLayout(this);
+        QHBoxLayout *controlsLayout = new QHBoxLayout();
         controlsLayout->setContentsMargins(0, 0, 0, 0);
         controlsLayout->setSpacing(0);