fixed a URI-Reference computation problem when validating small cleanup

* SAX.c: fixed a URI-Reference computation problem when validating
* xmlIO.c: small cleanup
Daniel
diff --git a/xmlIO.c b/xmlIO.c
index 33f2d7e..fd2b610 100644
--- a/xmlIO.c
+++ b/xmlIO.c
@@ -74,7 +74,7 @@
 #define xmlRegisterDefaultOutputCallbacks xmlRegisterDefOutputCallbacks
 #endif
 
-#define DEBUG_EXTERNAL_ENTITIES 
+/* #define DEBUG_EXTERNAL_ENTITIES */
 /* #define DEBUG_INPUT */
 
 #ifdef DEBUG_INPUT