From 99017bf94882180ea178df2446bb95a684866e5c Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Tue, 2 Apr 2024 17:10:12 +0200
Subject: [PATCH] xfree86: common: xf86Bus: fix char signess mismatch
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On NetBSD gives warning:

In file included from /usr/include/ctype.h:100,
                 from ../hw/xfree86/common/xf86Bus.c:36:
../hw/xfree86/common/xf86Bus.c: In function ‘StringToBusType’:
../hw/xfree86/common/xf86Bus.c:270:22: warning: array subscript has type ‘char’ [-Wchar-subscripts]
  270 |     if (isdigit(busID[0])) {
      |                      ^

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1455>
---
 hw/xfree86/common/xf86Bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/xfree86/common/xf86Bus.c b/hw/xfree86/common/xf86Bus.c
index 5e5cdb1a6..7d778c4dd 100644
--- a/hw/xfree86/common/xf86Bus.c
+++ b/hw/xfree86/common/xf86Bus.c
@@ -266,7 +266,7 @@ StringToBusType(const char *busID, const char **retID)
     BusType ret = BUS_NONE;
 
     /* If no type field, Default to PCI */
-    if (isdigit(busID[0])) {
+    if (isdigit((unsigned char)busID[0])) {
         if (retID)
             *retID = busID;
         return BUS_PCI;