code: fix coding style violation

Adapted commit of FedorSelitsky <[email protected]>
from PR #14

Signed-off-by: Jakub Filak <[email protected]>

Author: fedarsialitski

pyodata/client.py

@@ -37,7 +37,7 @@ def __new__(cls, url, connection, odata_version=ODATA_VERSION_2):
                     'Metadata request failed, status code: {}, body:\n{}'.format(resp.status_code, resp.content), resp)
 
             mime_type = resp.headers['content-type']
-            if not any((typ in  ['application/xml', 'text/xml'] for typ in mime_type.split(';'))):
+            if not any((typ in ['application/xml', 'text/xml'] for typ in mime_type.split(';'))):
                 raise HttpError(
                     'Metadata request did not return XML, MIME type: {}, body:\n{}'.format(mime_type, resp.content),
                     resp)