Remove trailing whitespace.
diff --git a/Doc/library/aifc.rst b/Doc/library/aifc.rst
index 7f7d7fe..e3bb51a 100644
--- a/Doc/library/aifc.rst
+++ b/Doc/library/aifc.rst
@@ -17,7 +17,7 @@
 ability to compress the audio data.
 
 .. warning::
-   
+
    Some operations may only work under IRIX; these will raise :exc:`ImportError`
    when attempting to import the :mod:`cl` module, which is only available on IRIX.