Init variables where they are declared when possible (clang-tidy)

clang-tidy -p compile_commands.json $file \
    -checks='-*,modernize-use-default-member-init,readability-redundant-member-init' \
    -config='{CheckOptions: [{key: modernize-use-default-member-init.UseAssignment, value: "1"}]}' \
    -header-filter='qtwayland' \
    -fix

Afterwards I ran search and replace on the diff to clean up some whitespace errors:

- Replaced '(\n\+[^:\n]*)(:\s+\+\s+)' with '$1: '
- Replaced '(\n\+[^,\n]*)(,\s+\+\s+)' with '$1, '
- Replaced '\n\+\s*\n' with '\n'

I also had to do some manual edits, because for some reason, this particular
clang-tidy check doesn't trigger for some files.

Change-Id: I3b3909bac4bf20108bbe8ad1e01bcc54236dae1b
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/client/qwaylanddatadevice_p.h b/src/client/qwaylanddatadevice_p.h
index 7fb0003b4..29461930b 100644
--- a/src/client/qwaylanddatadevice_p.h
+++ b/src/client/qwaylanddatadevice_p.h
@@ -117,9 +117,9 @@ private:
     QPoint calculateDragPosition(int x, int y, QWindow *wnd) const;
 #endif
 
-    QWaylandDisplay *m_display;
-    QWaylandInputDevice *m_inputDevice;
-    uint32_t m_enterSerial;
+    QWaylandDisplay *m_display = nullptr;
+    QWaylandInputDevice *m_inputDevice = nullptr;
+    uint32_t m_enterSerial = 0;
     QPointer<QWindow> m_dragWindow;
     QPoint m_dragPoint;
     QScopedPointer<QWaylandDataOffer> m_dragOffer;