General code cleanups

* Removing unused includes
* Use member initialization
* Use range-based for loops
* Use nullptr
* Removed no longer used aliases
* Use override
* Don't use else after return
* Use '= delete' to remove implicit members
* Use std::string::empty instead of comparing to ""

1 files changed, 2 insertions, 4 deletions

diff --git a/src/gui/widgets/slider.cpp b/src/gui/widgets/slider.cpp
index 3852159b..fd21becf 100644
--- a/src/gui/widgets/slider.cpp
+++ b/src/gui/widgets/slider.cpp
@@ -35,15 +35,13 @@ float Slider::mAlpha = 1.0;
 int Slider::mInstances = 0;
 
 Slider::Slider(double scaleEnd):
-    gcn::Slider(scaleEnd),
-    mHasMouse(false)
+    gcn::Slider(scaleEnd)
 {
     init();
 }
 
 Slider::Slider(double scaleStart, double scaleEnd):
-    gcn::Slider(scaleStart, scaleEnd),
-    mHasMouse(false)
+    gcn::Slider(scaleStart, scaleEnd)
 {
     init();
 }