Fix clang build failure for k9saveimage

This resolves issue#16.

Signed-off-by: Ray-V <ray-v@inbox.lv>
(cherry picked from commit 4b56933df7)

libk9copy/k9saveimage.cpp

@@ -76,7 +76,7 @@ void k9SaveImage::run() {
     TQString sFileName=m_tempFile->name();
     m_image.save(sFileName,"PNG");
     sFileName="\rINFOIMAGE:"+sFileName;
-    fprintf(stderr,"%s",sFileName.local8Bit());
+    fprintf(stderr,"%s",sFileName.local8Bit().data());
 
     m_mutex.unlock();
 }