[totem-pl-parser] core: fix garbage in CDATA values for shorter texts

[Bastien Nocera <hadess src gnome org>]

commit 0b89b79c50d9a0a22f23d1ba40a73f9f3cd54da2
Author: crvi <crvisqr gmail com>
Date:   Wed Apr 7 04:00:30 2021 +0530

    core: fix garbage in CDATA values for shorter texts
    
    This change properly null terminates the CDATA values. For shorter
    CDATA values, this fix is mandatory to override the token buffer text
    which contains the previous token value of '<![CDATA['. CDATA value is
    overwritten on top of this CDATA marker causing garbage data.
    
    For longer CDATA values, this wasn't an issue, as the token buffer (
    64K ) is already filled with NULL chars, causing this issue to not
    show up.
    
    Closes: #30

 plparse/xmllexer.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/plparse/xmllexer.c b/plparse/xmllexer.c
index 818e7f8..fc448ea 100644
--- a/plparse/xmllexer.c
+++ b/plparse/xmllexer.c
@@ -541,6 +541,7 @@ int lexer_get_token_d_r(struct lexer * lexer, char ** _tok, int * _tok_size, int
          if (strncmp(lexer->lexbuf + lexer->lexbuf_pos, "]]>", 3) == 0) {
            lexer->lexbuf_pos += 3;
            lexer->lex_mode = DATA;
+           tok[tok_pos] = '\0';
            return T_CDATA_STOP;
          } else {
            tok[tok_pos] = c;