[PATCH v2] speakup: remove usage of non-standard u_char

[Yureka Lilian <yuka@yuka.dev>]

This code is included in the build tools makemapdata and genmap, and it
expects that libc exposes a definition of u_char. But u_char is not
defined in either C or POSIX standards, and some systems don't have it.
Namely this breaks the build on hosts using musl libc, because musl only
exposes u_char if _GNU_SOURCE is defined.

Signed-off-by: Yureka Lilian <yuka@yuka.dev>
Cc: stable@vger.kernel.org
---
Content is unchanged compared to v1, but hopefully the patch is not
corrupted this time and I added a cc: stable
---
 drivers/accessibility/speakup/utils.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/accessibility/speakup/utils.h b/drivers/accessibility/speakup/utils.h
index 4bf2ee8ac246..4ce9a12f7664 100644
--- a/drivers/accessibility/speakup/utils.h
+++ b/drivers/accessibility/speakup/utils.h
@@ -54,7 +54,7 @@ static inline int oops(const char *msg, const char *info)
 
 static inline struct st_key *hash_name(char *name)
 {
-	u_char *pn = (u_char *)name;
+	unsigned char *pn = (unsigned char *)name;
 	int hash = 0;
 
 	while (*pn) {
-- 
2.38.1