Patch for bug 223097 was missing an include that caused windows to not be able to compile schema validation. not part of default build

git-svn-id: svn://10.0.0.236/trunk@175166 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/extensions/schema-validation/src/nsSchemaValidatorUtils.cpp

@@ -50,6 +50,7 @@
 #include <stdlib.h>
 #include <math.h>
 #include <errno.h>
+#include <limits.h>
 #include "prlog.h"
 #include "prprf.h"
 #include "prtime.h"