Coverity 375564: Avoid uninitialised variable.

When we call zscreen_enum_init with a screen that doesn't set
spot_function it can get copied into the graphics state. I
couldn't satisfy myself that this never actually matters, so
I settled for initing everything to zero for clarity. This
is not speed critical code.

1 files changed, 2 insertions, 2 deletions

diff --git a/psi/zht.c b/psi/zht.c
index f1cc8d94d..96af0348a 100644
--- a/psi/zht.c
+++ b/psi/zht.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2021 Artifex Software, Inc.
+/* Copyright (C) 2001-2022 Artifex Software, Inc.
    All Rights Reserved.
 
    This software is provided AS-IS with no warranty, either express or
@@ -126,7 +126,7 @@ static int
 zsetscreen(i_ctx_t *i_ctx_p)
 {
     os_ptr op = osp;
-    gs_screen_halftone screen;
+    gs_screen_halftone screen = { 0 };
     gx_ht_order order;
     int code = zscreen_params(op, &screen);
     gs_memory_t *mem;