use full path for images

screenless/bureau/photography/photography.py

@@ -79,8 +79,9 @@ class Photography(Bureau):
 
         # copy last image to the tmpfile
         filelist = os.listdir("/tmp/webcam")
+        for i, f in enumerate(filelist):
+            filelist[i] = os.path.join("/tmp/webcam", f)
         newest = max(filelist, key=lambda x: os.stat(x).st_mtime)
-        newest = os.path.join("/tmp/webcam", newest)
         shutil.copyfile(newest, tmpimg.name)
         
         self._doc_light_off()