whitespace fix
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 874aea7..69b769b 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -193,7 +193,7 @@
 
 Exceptions defined within this module inherit from SubprocessError.
 check_call() and check_output() will raise CalledProcessError if the
-called process returns a non-zero return code.  TimeoutExpired 
+called process returns a non-zero return code.  TimeoutExpired
 be raised if a timeout was specified and expired.