Fixed obvious indentation error in InvalidResponseRecievedException class definition (#193)

Signed-off-by: Tomas Hozza <thozza@gmail.com>

Author: thozza

pymodbus/exceptions.py

@@ -83,14 +83,13 @@ class InvalidResponseRecievedException(ModbusException):
     Error resulting from invalid response received or decoded
     """
 
+    def __init__(self, string=""):
+        ''' Initialize the exception
 
-def __init__(self, string=""):
-    ''' Initialize the exception
-
-    :param string: The message to append to the error
-    '''
-    message = "[Invalid Response] %s" % string
-    ModbusException.__init__(self, message)
+        :param string: The message to append to the error
+        '''
+        message = "[Invalid Response] %s" % string
+        ModbusException.__init__(self, message)
 
 #---------------------------------------------------------------------------#
 # Exported symbols