documentation/doxygen: ignore branch that we have no chance of reaching.

diff --git a/documentation/doxygen.py b/documentation/doxygen.py
index 5b0d8e88463e16f79887b8be84dc118f694b6c9c..530d6db22a48eade2bb1ab2f9eda48ef4de04891 100755 (executable)
--- a/documentation/doxygen.py
+++ b/documentation/doxygen.py
@@ -1751,7 +1751,7 @@ def parse_desc_internal(state: State, element: ET.Element, immediate_parent: ET.
             try:
                 entity = mapping[i.tag]
                 out.parsed += '&{};'.format(entity)
-            except:
+            except: # pragma: no cover
                 logging.warning("{}: ignoring <{}> in desc".format(state.current, i.tag))
 
         # Now we can reset previous_section to None, nobody needs it anymore.