indent with tabs, and prevent TB when ctypes modules is not found.

src/common/sleepy.py

@@ -37,8 +37,7 @@ try:
 			GetLastInputInfo = ctypes.windll.user32.GetLastInputInfo
 
 			class LASTINPUTINFO(ctypes.Structure):
-                        _fields_ = [('cbSize', ctypes.c_uint),
-                            ('dwTime', ctypes.c_uint)]
+				_fields_ = [('cbSize', ctypes.c_uint), ('dwTime', ctypes.c_uint)]
 
 			lastInputInfo = LASTINPUTINFO()
 			lastInputInfo.cbSize = ctypes.sizeof(lastInputInfo)
@@ -62,6 +61,9 @@ class SleepyWindows:
 
 	def poll(self):
 		'''checks to see if we should change state'''
+		if not SUPPORTED:
+			return False
+
 		idleTime = self.getIdleSec()
 
 		# xa is stronger than away so check for xa first
@@ -80,7 +82,6 @@ class SleepyWindows:
 		self.state = val
 
 class SleepyUnix:
-
 	def __init__(self, away_interval = 60, xa_interval = 120):
 		self.away_interval = away_interval
 		self.xa_interval = xa_interval