[sysadmin-bin] Make sure we check whether the repo is a wiki before actually fetching its DOAP file

[Andrea Veri <averi src gnome org>]

commit df550d3f731b8b00b95c97edc427e54a0011adf0
Author: Andrea Veri <averi redhat com>
Date:   Thu Jul 19 10:07:21 2018 +0200

    Make sure we check whether the repo is a wiki before actually fetching its DOAP file

 git/post-receive-mirror-github | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/git/post-receive-mirror-github b/git/post-receive-mirror-github
index bd05225..89e0f67 100755
--- a/git/post-receive-mirror-github
+++ b/git/post-receive-mirror-github
@@ -157,13 +157,14 @@ def get_repo_settings(repo_name):
 def main():
     gh = GitHub()
     repo_name = get_repo_name()
-    github_name = gh.normalize_name(repo_name)
-    description, homepage = gh.fetch_github_repo(github_name)
-    settings = get_repo_settings(repo_name)
 
     if repo_name.endswith('.wiki'):
         sys.exit(1)
 
+    github_name = gh.normalize_name(repo_name)
+    description, homepage = gh.fetch_github_repo(github_name)
+    settings = get_repo_settings(repo_name)
+
     if description != settings["description"]:
         gh.update_github_repo(github_name, 'description', settings["description"])