Qt menu hack

Prevent a small inventory menu as the first one shown from forcing
all subsequent ones from being the same short height by forcing it
to have room for at least 15 lines.  Temporary hack until someone
figures out why resizing the reused WIN_INVEN isn't working.

Does not affect non-inventory menus which get created on demand and
destroyed when done so don't need to change size to fit different
contents.

win/Qt/qt_win.cpp

@@ -99,7 +99,8 @@ void NetHackQtWindow::Display(bool block UNUSED) { puts("unexpected Display"); }
 bool NetHackQtWindow::Destroy() { return true; }
 void NetHackQtWindow::CursorTo(int x UNUSED,int y UNUSED) { puts("unexpected CursorTo"); }
 void NetHackQtWindow::PutStr(int attr UNUSED, const QString& text UNUSED) { puts("unexpected PutStr"); }
-void NetHackQtWindow::StartMenu() { puts("unexpected StartMenu"); }
+void NetHackQtWindow::StartMenu(bool using_WIN_INVEN UNUSED)
+                                { puts("unexpected StartMenu"); }
 void NetHackQtWindow::AddMenu(int glyph UNUSED, const ANY_P* identifier UNUSED,
                               char ch UNUSED, char gch UNUSED, int attr UNUSED,
                               const QString& str UNUSED, unsigned itemflags UNUSED)