Fix includes in case of no match (RhBug:1505185)

https://bugzilla.redhat.com/show_bug.cgi?id=1505185

Closes: rpm-software-management#967
Approved by: ignatenkobrain

Author: j-mracek

dnf/base.py

@@ -161,8 +161,7 @@ def _setup_excludes_includes(self, only_main=False):
                         incl_query = incl_query.union(subj.get_best_query(
                             self.sack, with_nevra=True, with_provides=False, with_filenames=False))
                     incl_query = incl_query.filter(reponame=r.id)
-                    if incl_query:
-                        repo_includes.append((incl_query, r.id))
+                    repo_includes.append((incl_query.apply(), r.id))
                 excl_query = self.sack.query().filter(empty=True)
                 for excl in set(r.excludepkgs):
                     subj = dnf.subject.Subject(excl)