[trac983] fixed typo in comments

src/lib/python/isc/acl/dns.h

@@ -31,7 +31,7 @@ namespace python {
 // using the Python interpretor through this wrapper function.
 //
 // The __init__.py file should ensure isc.acl.acl has been loaded by the time
-// whenever this function is called, and there shouldn't be no operation
+// whenever this function is called, and there shouldn't be any operation
 // within this function that can fail (such as dynamic memory allocation),
 // so this function should always succeed.  Yet there may be an overlooked
 // failure mode, perhaps due to a bug in the binding implementation, or