Wide characterize libs and bitmap2component source.

(cherry picked from commit 54f91a0221)

bitmap2component/bitmap2cmp_gui.cpp

@@ -2,7 +2,7 @@
  * This program source code file is part of KICAD, a free EDA CAD application.
  *
  * Copyright (C) 1992-2010 jean-pierre.charras
- * Copyright (C) 1992-2021 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2022 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -468,7 +468,7 @@ wxString BM2CMP_FRAME::FormatOutputSize( double aSize )
     }
     else
     {
-        text.Printf( "%d", KiROUND( aSize ) );
+        text.Printf( wxT( "%d" ), KiROUND( aSize ) );
     }
 
     return text;