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Clear up a potential NULL dereference
https://bugzilla.gnome.org/show_bug.cgi?id=705399 if ctxt->node_seq.buffer is null then ctxt->node_seq.maximum ought to be zero but it's better to clarify the check in the code directly.
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@ -1990,7 +1990,8 @@ xmlParserAddNodeInfo(xmlParserCtxtPtr ctxt,
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/* Otherwise, we need to add new node to buffer */
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else {
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if (ctxt->node_seq.length + 1 > ctxt->node_seq.maximum) {
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if ((ctxt->node_seq.length + 1 > ctxt->node_seq.maximum) ||
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(ctxt->node_seq.buffer == NULL)) {
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xmlParserNodeInfo *tmp_buffer;
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unsigned int byte_size;
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