Fix flake8 W605 (theskumar#149)

greyli · theskumar · commit 27afc40a7d35 · 2018-10-31T16:53:15.000+05:30
diff --git a/dotenv/main.py b/dotenv/main.py
@@ -14,7 +14,7 @@
 from .compat import StringIO
 
 __escape_decoder = codecs.getdecoder('unicode_escape')
-__posix_variable = re.compile('\$\{[^\}]*\}')
+__posix_variable = re.compile('\$\{[^\}]*\}')  # noqa
 
 
 def decode_escaped(escaped):
