Fix "Print" tool handling in the toolbar sample

Ensure that the count of the Print tools is always correct, even if more tools
were inserted and then the toolbar was recreated (in a different position).

samples/toolbar/toolbar.cpp

@@ -481,6 +481,8 @@ void MyFrame::PopulateToolbar(wxToolBarBase* toolBar)
                          wxT("Delete this tool. This is a very long tooltip to test whether it does the right thing when the tooltip is more than Windows can cope with."));
     }
 
+    m_nPrint = 1;
+
     // add a stretchable space before the "Help" button to make it
     // right-aligned
     toolBar->AddStretchableSpace();
@@ -530,7 +532,7 @@ MyFrame::MyFrame(wxFrame* parent,
     m_searchTool = NULL;
 
     m_rows = 1;
-    m_nPrint = 1;
+    m_nPrint = 0; // set to 1 in PopulateToolbar()
 
 #if wxUSE_STATUSBAR
     // Give it a status line