various warning fixes for icc 9.1 compilation

- variable shadowing
- unused code and variables
- extra semicolons


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48864 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/sizer.cpp

@@ -1376,8 +1376,8 @@ wxFlexGridSizer::~wxFlexGridSizer()
 
 void wxFlexGridSizer::RecalcSizes()
 {
-    int nitems, nrows, ncols;
-    if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
+    int nrows, ncols;
+    if ( !CalcRowsCols(nrows, ncols) )
         return;
 
     const wxPoint pt(GetPosition());