Report 1024 as byte limit for meta charset sniff

Fixes validator/validator#232

Author: sideshowbarker

src/nu/validator/htmlparser/impl/Tokenizer.java

@@ -1289,7 +1289,7 @@ private void addAttributeWithoutValue() throws SAXException {
         // [NOCPP[
         if (metaBoundaryPassed && AttributeName.CHARSET == attributeName
                 && ElementName.META == tagName) {
-            err("A \u201Ccharset\u201D attribute on a \u201Cmeta\u201D element found after the first 512 bytes.");
+            err("A \u201Ccharset\u201D attribute on a \u201Cmeta\u201D element found after the first 1024 bytes.");
         }
         // ]NOCPP]
         if (attributeName != null) {
@@ -1337,7 +1337,7 @@ private void addAttributeWithValue() throws SAXException {
         // [NOCPP[
         if (metaBoundaryPassed && ElementName.META == tagName
                 && AttributeName.CHARSET == attributeName) {
-            err("A \u201Ccharset\u201D attribute on a \u201Cmeta\u201D element found after the first 512 bytes.");
+            err("A \u201Ccharset\u201D attribute on a \u201Cmeta\u201D element found after the first 1024 bytes.");
         }
         // ]NOCPP]
         if (attributeName != null) {