malloc-fail: Fix memory leak in xmlDocDumpFormatMemoryEnc

Found with libFuzzer, see #344.

1 files changed, 1 insertions, 0 deletions

diff --git a/xmlsave.c b/xmlsave.c
index 77cb7b9b..5b5c8f1f 100644
--- a/xmlsave.c
+++ b/xmlsave.c
@@ -2363,6 +2363,7 @@ xmlDocDumpFormatMemoryEnc(xmlDocPtr out_doc, xmlChar **doc_txt_ptr,
 
     if ((out_buff = xmlAllocOutputBuffer(conv_hdlr)) == NULL ) {
         xmlSaveErrMemory("creating buffer");
+        xmlCharEncCloseFunc(conv_hdlr);
         return;
     }