Initialize JsonDecodeError before initializing IOError

That way we get the formated error message

Author: cHYzZQo

requests/exceptions.py

@@ -33,6 +33,9 @@ class InvalidJSONError(RequestException):
 
 class JSONDecodeError(InvalidJSONError, CompatJSONDecodeError):
     """Couldn't decode the text into json"""
+    def __init__(self, *args, **kwargs):
+        CompatJSONDecodeError.__init__(self, *args)
+        InvalidJSONError.__init__(self, *self.args, **kwargs)
 
 
 class HTTPError(RequestException):