TST, COMPAT: Make MMapWrapper tests Windows compatible

Author: gfyoung

pandas/io/tests/test_common.py

@@ -138,6 +138,6 @@ def test_next(self):
 
         for line in lines:
             next_line = next(wrapper)
-            self.assertEqual(next_line, line)
+            self.assertEqual(next_line.strip(), line.strip())
 
         self.assertRaises(StopIteration, next, wrapper)