another small lineedit fix

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index a3d939551cd8ed0319de7371d476471ae0c296af..9a773b4b8ceaae5420d59f1e4b5bed0e51316a2f 100644 (file)
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -429,7 +429,9 @@ static void input_delete(int save)
 #endif
 
        memmove(command_ps + j, command_ps + j + 1,
-                       (command_len - j + 1) * sizeof(command_ps[0]));
+                       /* (command_len + 1 [because of NUL]) - (j + 1)
+                        * simplified into (command_len - j) */
+                       (command_len - j) * sizeof(command_ps[0]));
        command_len--;
        input_end();                    /* rewrite new line */
        cmdedit_set_out_char(' ');      /* erase char */