Spring cleaning: Apply clang-tidy to src/widget.

Using LLVM 3.8.0:

$ clang-tidy --fix --checks="*,-llvm-header-guard,-readability-implicit-bool-cast,-readability-else-after-return,-google-readability-todo" $(git ls src/widget | xargs) -- (flags to compile)

1 files changed, 2 insertions, 3 deletions

diff --git a/src/widget/wlibrarysidebar.cpp b/src/widget/wlibrarysidebar.cpp
index a32f021732..5893ac9dc5 100644
--- a/src/widget/wlibrarysidebar.cpp
+++ b/src/widget/wlibrarysidebar.cpp
@@ -29,8 +29,7 @@ WLibrarySidebar::WLibrarySidebar(QWidget* parent)
     header()->setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
 }
 
-WLibrarySidebar::~WLibrarySidebar() {
-}
+WLibrarySidebar::~WLibrarySidebar() = default;
 
 
 void WLibrarySidebar::contextMenuEvent(QContextMenuEvent *event) {
@@ -196,7 +195,7 @@ void WLibrarySidebar::keyPressEvent(QKeyEvent* event) {
 }
 
 void WLibrarySidebar::selectIndex(const QModelIndex& index) {
-    QItemSelectionModel* pModel = new QItemSelectionModel(model());
+    auto  pModel = new QItemSelectionModel(model());
     pModel->select(index, QItemSelectionModel::Select);
     setSelectionModel(pModel);