xml.h: add underscore for #ifdef guard - xmlparser - XML parser
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       ---
   DIR commit 69fd59a2bde2c2ddd9a478e83a90cfb969ad2369
   DIR parent 26ae48529f916f9cd178114f543aa565b8dbb088
  HTML Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Tue,  6 Oct 2020 19:00:50 +0200
       
       xml.h: add underscore for #ifdef guard
       
       This is the common style.
       
       Diffstat:
         M xml.h                               |       4 ++--
       
       1 file changed, 2 insertions(+), 2 deletions(-)
       ---
   DIR diff --git a/xml.h b/xml.h
       @@ -1,5 +1,5 @@
       -#ifndef _XML_H
       -#define _XML_H
       +#ifndef _XML_H_
       +#define _XML_H_
        
        #include <stdio.h>