initialise buf if wrong_info not used

diff --git a/engines/e_chil.c b/engines/e_chil.c
index 3a07076b4fef97a851a601f07d19a678309f86c4..68405b394b7e0cc65c8dc9dc5706b1baad137ba8 100644 (file)
--- a/engines/e_chil.c
+++ b/engines/e_chil.c
@@ -1316,6 +1316,8 @@ static int hwcrhk_insert_card(const char *prompt_info,
                if (wrong_info && *wrong_info)
                        BIO_snprintf(buf, sizeof(buf)-1,
                                "Current card: \"%s\"\n", wrong_info);
+               else
+                       buf[0] = 0;
                ok = UI_dup_info_string(ui, buf);
                if (ok >= 0 && prompt_info)
                        {