Take into account the source package instead of the binary name in the closedbugs plugin.

debexpo/plugins/closedbugs.py

@@ -62,9 +62,6 @@ class ClosedBugsPlugin(BasePlugin):
 
         bugs = [int(x) for x in self.changes['Closes'].split()]
 
-        binary_packages = self.changes['Description'].split('\n')
-        binary_packages = [t.strip() for t in binary_packages]
-
         if bugs:
             log.debug('Creating SOAP proxy to bugs.debian.org')
             try:
@@ -106,7 +103,7 @@ class ClosedBugsPlugin(BasePlugin):
 
                 name = data["raw"][bug]['package']
 
-                if self._package_in_descriptions(name, binary_packages) or name == "wnpp":
+                if data["raw"][bug]['source'] == self.changes["Source"] or name == "wnpp":
                     data["bugs"][name].append((bug, data["raw"][bug]["subject"], data["raw"][bug]["severity"]))
                 else:
                     data["errors"].append('Bug #%s does not belong to this package' % bug)