fix signed/unsigned comparison warnings

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50725 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/colordlg.cpp

@@ -120,7 +120,7 @@ int wxColourDialog::ShowModal()
     CHOOSECOLOR chooseColorStruct;
     memset(&chooseColorStruct, 0, sizeof(CHOOSECOLOR));
 
-    int i;
+    size_t i;
 
     // and transfer data from m_colourData to it
     COLORREF custColours[16];

src/msw/menu.cpp

@@ -793,7 +793,7 @@ bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id_)
     const int id = (signed short)id_;
 
     // ignore commands from the menu title
-    if ( id != idMenuTitle )
+    if ( id != (int)idMenuTitle )
     {
         // update the check item when it's clicked
         wxMenuItem * const item = FindItem(id);