Remove trailing whitespace.
diff --git a/Doc/library/ossaudiodev.rst b/Doc/library/ossaudiodev.rst
index e23b049..3ed3fb8 100644
--- a/Doc/library/ossaudiodev.rst
+++ b/Doc/library/ossaudiodev.rst
@@ -16,26 +16,26 @@
    use ALSA, you'll have to make sure its OSS compatibility layer
    is active to use ossaudiodev, but you're gonna need it for the vast
    majority of Linux audio apps anyways.
-   
+
    Sounds like things are also complicated for other BSDs.  In response
    to my python-dev query, Thomas Wouters said:
-   
+
    > Likewise, googling shows OpenBSD also uses OSS/Free -- the commercial
    > OSS installation manual tells you to remove references to OSS/Free from the
    > kernel :)
-   
+
    but Aleksander Piotrowsk actually has an OpenBSD box, and he quotes
    from its <soundcard.h>:
    >  * WARNING!  WARNING!
    >  * This is an OSS (Linux) audio emulator.
    >  * Use the Native NetBSD API for developing new code, and this
    >  * only for compiling Linux programs.
-   
+
    There's also an ossaudio manpage on OpenBSD that explains things
    further.  Presumably NetBSD and OpenBSD have a different standard
    audio interface.  That's the great thing about standards, there are so
    many to choose from ... ;-)
-   
+
    This probably all warrants a footnote or two, but I don't understand
    things well enough right now to write it!   --GPW