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, 3 insertions, 3 deletions

diff --git a/src/gui/widgets/progressbar.h b/src/gui/widgets/progressbar.h
index d3a4c100..d7289816 100644
--- a/src/gui/widgets/progressbar.h
+++ b/src/gui/widgets/progressbar.h
@@ -54,7 +54,7 @@ class ProgressBar : public gcn::Widget
         /**
          * Update the alpha value to the graphic components.
          */
-        void updateAlpha();
+        static void updateAlpha();
 
         /**
          * Draws the progress bar.
@@ -120,12 +120,12 @@ class ProgressBar : public gcn::Widget
 
     private:
         float mProgress, mProgressToGo;
-        bool mSmoothProgress;
+        bool mSmoothProgress = true;
 
         int mProgressPalette; /** < Entry in ProgressPalette or -1 for none. */
         gcn::Color mColor;
         gcn::Color mColorToGo;
-        bool mSmoothColorChange;
+        bool mSmoothColorChange = true;
 
         std::string mText;