Fix typos.

Lib/codecs.py

@@ -312,9 +312,9 @@ class StreamReader(Codec):
                 self.atcr = data.endswith(u"\r")
                 # If we're at a "\r" (and are allowed to read more), read one
                 # extra character (which might be a "\n") to get a proper
-                # line ending (If the stream is temporarily exhausted we return
+                # line ending. (If the stream is temporarily exhausted we return
                 # the wrong line ending, but at least we won't generate a bogus
-                # second line.
+                # second line.)
                 if self.atcr and size is None:
                     data += self.read(size=1, chars=1)
                     self.atcr = data.endswith(u"\r")