Partial introduction of bools where appropriate.
diff --git a/Lib/CGIHTTPServer.py b/Lib/CGIHTTPServer.py
index c3a6a18..56dee47 100644
--- a/Lib/CGIHTTPServer.py
+++ b/Lib/CGIHTTPServer.py
@@ -307,7 +307,7 @@
     try:
         st = os.stat(path)
     except os.error:
-        return 0
+        return False
     return st[0] & 0111 != 0