doxygen: don't silently ignore friend declarations.

diff --git a/doxygen/dox2html5.py b/doxygen/dox2html5.py
index 280c9cc6edb25e3626df7b0b435c03fa2d014a5e..1bc8a3818aabcacaab916d20657c70b3728f5b7f 100755 (executable)
--- a/doxygen/dox2html5.py
+++ b/doxygen/dox2html5.py
@@ -2482,8 +2482,7 @@ def parse_xml(state: State, xml: str):
             elif compounddef_child.attrib['kind'] not in ['private-type',
                                                           'private-static-func',
                                                           'private-static-attrib',
-                                                          'private-attrib',
-                                                          'friend']: # pragma: no cover
+                                                          'private-attrib']: # pragma: no cover
                 logging.warning("{}: unknown <sectiondef> kind {}".format(state.current, compounddef_child.attrib['kind']))
 
         elif compounddef_child.tag == 'templateparamlist':