Wrong enum as boolean usage in Text3.cpp

[Stephan Witt]

Since change 02cb5fd3 one can see the clever code fragment in Text3.cpp line 
2934..2943 has a problem with Clipboard::PdfGraphicsType. The assignment of 
type for "pdf" at line 2935 is not true for arg value "pdf". The enum 
Clipboard::GraphicsType shouldn't start with PdfGraphicsType or the code block 
has to be changed. Solution 1 is attached as patch. Ok to apply?

Stephan

PdfGraphicsType.patch
Description: Binary data