Don't use std::min(), it's not available everywhere.

Fix compilation using Sun CC under Solaris.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72745 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/aui/tabartgtk.cpp

@@ -383,7 +383,8 @@ void wxAuiGtkTabArt::DrawTab(wxDC& dc, wxWindow* wnd, const wxAuiNotebookPage& p
         *out_button_rect = DrawCloseButton(dc, widget, close_button_state, rect, wxRIGHT, &area);
     }
 
-    tab_rect.width = std::min(tab_rect.width, clip_width);
+    if ( clip_width < tab_rect.width )
+        tab_rect.width = clip_width;
     *out_tab_rect = tab_rect;
 
     dc.DestroyClippingRegion();