Add the initialisation of the variable start_bugfix and close_bugfix.

build_version.py

@@ -710,6 +710,7 @@ if __name__ == '__main__':
 
     OPS.set_defaults(api_doc=False,
                      api_pdf=False,
+                     close_bugfix=False,
                      close_feature=False,
                      close_hotfix=False,
                      close_release=False,
@@ -719,6 +720,7 @@ if __name__ == '__main__':
                      reference_doc=False,
                      reference_pdf=False,
                      release=False,
+                     start_bugfix=False,
                      start_feature=False,
                      start_hotfix=False,
                      start_release=False,
@@ -785,4 +787,4 @@ if __name__ == '__main__':
     if OPT.version:
         print "\nThe current release is %s\n" % get_version()
 
-    sys.exit(0)
+    sys.exit(0)
\ No newline at end of file