minor error cleanup for gcc-3.3.[12] compilation warnings.

* catalog.c,relaxng.c,testAutomata.c,xpointer.c,genChRanges.py,
  chvalid.c,include/libxml/chvalid.h,doc/examples/test1.c:
  minor error cleanup for gcc-3.3.[12] compilation warnings.
diff --git a/catalog.c b/catalog.c
index 7ec04a3..df21927 100644
--- a/catalog.c
+++ b/catalog.c
@@ -1973,7 +1973,7 @@
 #define NEXT cur++;
 #define SKIP(x) cur += x;
 
-#define SKIP_BLANKS while (IS_BLANK(*cur)) NEXT;
+#define SKIP_BLANKS while (IS_BLANK_CH(*cur)) NEXT;
 
 /**
  * xmlParseSGMLCatalogComment: