Merge pull request openSUSE#1937 from openSUSE/multibuild_null_flavor

Tolarate empty flavor in multibuild resolve

Author: dmach

osc/core.py

@@ -6490,9 +6490,15 @@ def parse_multibuild_data(s: str):
 
         root = xml_fromstring(s)
         for node in root.findall("flavor"):
+            if node.text is None:
+                result.add("")
+                continue
             result.add(node.text)
         # <package> is deprecated according to OBS Multibuild.pm, but it is widely used
         for node in root.findall("package"):
+            if node.text is None:
+                result.add("")
+                continue
             result.add(node.text)
         return result