Fix mismatch opening and closing quotes on a string.
diff --git a/Lib/test/leakers/test_gestalt.py b/Lib/test/leakers/test_gestalt.py
index f947fc5..46bfcc8 100644
--- a/Lib/test/leakers/test_gestalt.py
+++ b/Lib/test/leakers/test_gestalt.py
@@ -1,8 +1,7 @@
-
 import sys
 
 if sys.platform != 'darwin':
-    raise ValueError, "This test only leaks on Mac OS X'
+    raise ValueError, "This test only leaks on Mac OS X"
 
 def leak():
     # taken from platform._mac_ver_lookup()