Mozilla bug 1650066 fixup - Avoid calling errListUnclosedStartTags in C++.

Differential Revision: https://phabricator.services.mozilla.com/D82007

Author: hsivonen

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

@@ -1350,9 +1350,11 @@ public final void eof() throws SAXException {
                         assert fragment;
                         break eofloop;
                     }
+                    // [NOCPP[
                     if (errorHandler != null) {
                         errListUnclosedStartTags(0);
                     }
+                    // ]NOCPP]
                     while (currentPtr >= eltPos) {
                         pop();
                     }