roomservice: Set exit status if we fail to fetch data from github

Change-Id: I6f69f1df1ba7d28e68c5961b405a54e209643db3
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

build/tools/roomservice.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 # Copyright (C) 2012-2013, The CyanogenMod Project
-#           (C) 2017,      The LineageOS Project
+#           (C) 2017-2018,2020-2021, The LineageOS Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -78,10 +78,10 @@ if not depsonly:
         result = json.loads(urllib.request.urlopen(githubreq).read().decode())
     except urllib.error.URLError:
         print("Failed to search GitHub")
-        sys.exit()
+        sys.exit(1)
     except ValueError:
         print("Failed to parse return data from GitHub")
-        sys.exit()
+        sys.exit(1)
     for res in result.get('items', []):
         repositories.append(res)