shithub: puzzles

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Fix a memory error in Guess cursor handling.

--- a/guess.c

+++ b/guess.c

@@ -777,6 +777,8 @@

         set_peg(&from->params, ui, ui->peg_cur, 0);

         ret = "";

     } else if (button == 'H' || button == 'h') {

+        if (ui->peg_cur == from->params.npegs)

+            return NULL;

         ui->display_cur = 1;

         ui->holds[ui->peg_cur] = 1 - ui->holds[ui->peg_cur];

         ret = "";