[LyX/master] Remove C-style casts found by cppcheck

[Georg Baum]

commit 34bfad7f644e0c246caed6a30fa306143e365701
Author: Georg Baum <b...@lyx.org>
Date:   Sat Oct 10 21:44:08 2015 +0200

    Remove C-style casts found by cppcheck

diff --git a/src/frontends/qt4/GuiToc.cpp b/src/frontends/qt4/GuiToc.cpp
index a18fbba..7a64ba4 100644
--- a/src/frontends/qt4/GuiToc.cpp
+++ b/src/frontends/qt4/GuiToc.cpp
@@ -75,7 +75,7 @@ void GuiToc::enableView(bool /*enable*/)
 void GuiToc::closeEvent(QCloseEvent * /*event*/)
 {
        is_closing_ = true;
-       ((GuiView *)parent())->updateToolbars();
+       static_cast<GuiView *>(parent())->updateToolbars();
        is_closing_ = false;
 }
 
diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 5148e75..f8fa48c 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -1378,7 +1378,7 @@ GuiWorkArea * GuiView::workArea(Buffer & buffer)
 {
        if (currentWorkArea()
                && &currentWorkArea()->bufferView().buffer() == &buffer)
-               return (GuiWorkArea *) currentWorkArea();
+               return currentWorkArea();
        if (TabWorkArea * twa = d.currentTabWorkArea())
                return twa->workArea(buffer);
        return 0;