largefiles: use strip() instead of slicing to get rid of EOL of standin

This slicing prevents from replacing SHA-1 by another (= longer hash
value) in the future.

hgext/largefiles/basestore.py

@@ -130,7 +130,7 b' class basestore(object):'
                     key = (filename, fctx.filenode())
                     if key not in verified:
                         verified.add(key)
-                        expectedhash = fctx.data()[0:40]
+                        expectedhash = fctx.data().strip()
                         filestocheck.append((cset, filename, expectedhash))
 
         failed = self._verifyfiles(contents, filestocheck)