Fixed bug in build status output

mpcdf_build_status.py

@@ -140,7 +140,7 @@ def do_mpcdf_build_status(self, subcmd, opts, *args):
     ignore_status = ignore_status.union(["disabled", "excluded", "succeeded"])
 
     def print_stdout(text=""):
-        if opts.only_count is None:
+        if not opts.only_count:
             print(text)
 
     count = dict()