[hackers] [dmenu] fix a regression in the previous commit for tab complete || Hiltjo Posthuma

[git]

commit 1e8c5b68f4881bd4ae257c780fd41f129c79f419
Author:     Hiltjo Posthuma <hil...@codemadness.org>
AuthorDate: Fri Sep 2 19:09:50 2022 +0200
Commit:     Hiltjo Posthuma <hil...@codemadness.org>
CommitDate: Fri Sep 2 19:09:50 2022 +0200

    fix a regression in the previous commit for tab complete
    
    Reported by Santtu Lakkala <i...@inz.fi>, thanks!

diff --git a/dmenu.c b/dmenu.c
index 6b285df..818313a 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -519,7 +519,7 @@ insert:
                        return;
                cursor = strnlen(sel->text, sizeof text - 1);
                memcpy(text, sel->text, cursor);
-               text[sizeof text - 1] = '\0';
+               text[cursor] = '\0';
                match();
                break;
        }