We'll add type annotations to the run() methods, so add 'return'
statements to all the functions so the type checker won't
complain.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 tests/docker/docker.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/docker/docker.py b/tests/docker/docker.py
index 0de7662146..e3bfa1cc9e 100755
--- a/tests/docker/docker.py
+++ b/tests/docker/docker.py
@@ -418,7 +418,7 @@ class ProbeCommand(SubCommand):
         except Exception:
             print("no")
 
-        return
+        return 0
 
 
 class CcCommand(SubCommand):
@@ -503,6 +503,7 @@ class CheckCommand(SubCommand):
                     print ("Image less than %d minutes old" % (args.olderthan))
                 return 0
 
+        return 0
 
 def main():
     parser = argparse.ArgumentParser(description="A Docker helper",
-- 
2.18.0.rc1.1.g3f1ff2140