[library-web] Try bypassing invalid xml files to avoid the entire build to break

[Andrea Veri <averi src gnome org>]

commit 7feae0aa8318813e19049ef7cb36888e73380c9f
Author: Andrea Veri <averi redhat com>
Date:   Tue Feb 25 17:10:25 2020 +0100

    Try bypassing invalid xml files to avoid the entire build to break

 src/modtypes/mallard.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/modtypes/mallard.py b/src/modtypes/mallard.py
index 72092ba..0800706 100644
--- a/src/modtypes/mallard.py
+++ b/src/modtypes/mallard.py
@@ -37,7 +37,10 @@ import errors
 from base import DocModule
 
 def dup_node(e):
-    return ET.fromstring(ET.tostring(e, encoding='utf-8'))
+    try:
+        return ET.fromstring(ET.tostring(e, encoding='utf-8'))
+    except xml.etree.ElementTree.ParseError as e:
+        print e
 
 
 MAL_NS = 'http://projectmallard.org/1.0/'