Fix pylint on CI

For some reason, we get an error here on Travis but not locally. This happens
even with the same Python/pylint/astroid versions...

qutebrowser/browser/webkit/network/networkreply.py

@@ -34,8 +34,8 @@ class FixedDataNetworkReply(QNetworkReply):
 
     """QNetworkReply subclass for fixed data."""
 
-    def __init__(self, request, fileData, mimeType,  # noqa: N803
-                 parent=None):
+    def __init__(self, request,  # noqa: N803 pylint: disable=invalid-name
+                 fileData, mimeType, parent=None):
         """Constructor.
 
         Args: