slackline: fix reallocation memory issue - lchat - A line oriented chat front end for ii.
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       ---
 (DIR) commit d671b2273e2283df46dd940dc7ce6a1a3476f9eb
 (DIR) parent dbc8751dc6c034967d2b3133a58a627834992e8c
 (HTM) Author: Petr Vaněk <arkamar@atlas.cz>
       Date:   Mon, 26 Sep 2022 16:27:12 +0200
       
       slackline: fix reallocation memory issue
       
       It is necessary to update sl->ptr and sl->last pointers appropriately
       after reallocation otherwise backspacing or deleting can work in wrong
       memory area.
       
       Diffstat:
         M slackline.c                         |       2 ++
       
       1 file changed, 2 insertions(+), 0 deletions(-)
       ---
 (DIR) diff --git a/slackline.c b/slackline.c
       @@ -239,6 +239,8 @@ compose:
                        if ((nbuf = realloc(sl->buf, sl->bufsize * 2)) == NULL)
                                return -1;
        
       +                sl->ptr = nbuf + (sl->ptr - sl->buf);
       +                sl->last = nbuf + (sl->last - sl->buf);
                        sl->buf = nbuf;
                        sl->bufsize *= 2;
                }