Minor setup.py fix

setup.py

@@ -16,10 +16,10 @@ with open(os.path.join("hddfancontrol", "__init__.py"), "rt") as f:
 
 with open("requirements.txt", "rt") as f:
   requirements = f.read().splitlines()
-  # require enum34 if enum module is missing (Python 3.3)
+# require enum34 if enum module is missing (Python 3.3)
-  try:
+try:
   import enum
-  except ImportError:
+except ImportError:
   requirements.append("enum34")
 
 try: