socket.py: add a minor comment

daad3d6e · Denis Bilenko · 61af679f · daad3d6e
Commit daad3d6e authored Sep 12, 2012 by Denis Bilenko
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gevent/socket.py gevent/socket.py +1 -0

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--- a/gevent/socket.py
+++ b/gevent/socket.py
@@ -394,6 +394,7 @@ class socket(object):
            try:
                self._wait(self._read_event)
            except error:
+                # if another greenlet called this socket, _wait would fail with EBADF
                ex = sys.exc_info()[1]
                if ex.args[0] == EBADF:
                    return ''