SDL: hidapi/linux: fixed crash if uevent info isn't available

From e6834a153592ff998a7560ebb0fc5dfe50b3db7b Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Thu, 25 May 2023 17:13:41 -0700
Subject: [PATCH] hidapi/linux: fixed crash if uevent info isn't available

Signed-off-by: Sam Lantinga <slouken@libsdl.org>
---
 src/hidapi/linux/hid.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/hidapi/linux/hid.c b/src/hidapi/linux/hid.c
index e742b13aa6f2..265f42474a2e 100644
--- a/src/hidapi/linux/hid.c
+++ b/src/hidapi/linux/hid.c
@@ -513,6 +513,11 @@ static int parse_uevent_info(const char *uevent, unsigned *bus_type,
 	char **serial_number_utf8, char **product_name_utf8)
 {
 	char tmp[1024];
+
+	if (!uevent) {
+		return 0;
+	}
+
 	size_t uevent_len = strlen(uevent);
 	if (uevent_len > sizeof(tmp) - 1)
 		uevent_len = sizeof(tmp) - 1;