Fix a couple of warnings on Mac OS X.
diff --git a/Mac/Modules/cf/pycfbridge.c b/Mac/Modules/cf/pycfbridge.c
index 30122dc..ae9e128 100644
--- a/Mac/Modules/cf/pycfbridge.c
+++ b/Mac/Modules/cf/pycfbridge.c
@@ -283,7 +283,7 @@
if (PyString_Check(src)) {
if (!PyArg_Parse(src, "es", "ascii", &chars))
- return NULL; /* This error is more descriptive than the general one below */
+ return 0; /* This error is more descriptive than the general one below */
*dst = CFStringCreateWithCString((CFAllocatorRef)NULL, chars, kCFStringEncodingASCII);
return 1;
}