SDL: Fixed potential uninitialized memory access (thanks Mathieu!)

SDL Commits
1 
From b9784feb2467dbb4cdc2474aa78098cd4f0b1630 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 4 Nov 2023 21:10:10 -0700
Subject: [PATCH] Fixed potential uninitialized memory access (thanks Mathieu!)

GetRawInputDeviceList() can return a different number of devices than was allocated.

Fixes https://github.com/libsdl-org/SDL/issues/2759
---
 src/joystick/windows/SDL_rawinputjoystick.c     | 3 ++-
 src/joystick/windows/SDL_windows_gaming_input.c | 3 ++-
 src/joystick/windows/SDL_xinputjoystick.c       | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/joystick/windows/SDL_rawinputjoystick.c b/src/joystick/windows/SDL_rawinputjoystick.c
index 4bdb3cf3a577..4cc274d8ac3c 100644
--- a/src/joystick/windows/SDL_rawinputjoystick.c
+++ b/src/joystick/windows/SDL_rawinputjoystick.c
@@ -991,7 +991,8 @@ static void RAWINPUT_DetectDevices(void)
 
         devices = (PRAWINPUTDEVICELIST)SDL_malloc(sizeof(RAWINPUTDEVICELIST) * device_count);
         if (devices) {
-            if (GetRawInputDeviceList(devices, &device_count, sizeof(RAWINPUTDEVICELIST)) != -1) {
+            device_count = GetRawInputDeviceList(devices, &device_count, sizeof(RAWINPUTDEVICELIST));
+            if (device_count != (UINT)-1) {
                 for (i = 0; i < device_count; ++i) {
                     RAWINPUT_AddDevice(devices[i].hDevice);
                 }
diff --git a/src/joystick/windows/SDL_windows_gaming_input.c b/src/joystick/windows/SDL_windows_gaming_input.c
index 675e21537cd5..d939ea6cc545 100644
--- a/src/joystick/windows/SDL_windows_gaming_input.c
+++ b/src/joystick/windows/SDL_windows_gaming_input.c
@@ -132,7 +132,8 @@ static SDL_bool SDL_IsXInputDevice(Uint16 vendor, Uint16 product)
         return SDL_FALSE;
     }
 
-    if (GetRawInputDeviceList(raw_devices, &raw_device_count, sizeof(RAWINPUTDEVICELIST)) == -1) {
+    raw_device_count = GetRawInputDeviceList(raw_devices, &raw_device_count, sizeof(RAWINPUTDEVICELIST));
+    if (raw_device_count == (UINT)-1) {
         SDL_free(raw_devices);
         raw_devices = NULL;
         return SDL_FALSE; /* oh well. */
diff --git a/src/joystick/windows/SDL_xinputjoystick.c b/src/joystick/windows/SDL_xinputjoystick.c
index fe45ed61f868..91ad48590b08 100644
--- a/src/joystick/windows/SDL_xinputjoystick.c
+++ b/src/joystick/windows/SDL_xinputjoystick.c
@@ -132,7 +132,8 @@ static void GuessXInputDevice(Uint8 userid, Uint16 *pVID, Uint16 *pPID, Uint16 *
         return;
     }
 
-    if (GetRawInputDeviceList(devices, &device_count, sizeof(RAWINPUTDEVICELIST)) == -1) {
+    device_count = GetRawInputDeviceList(devices, &device_count, sizeof(RAWINPUTDEVICELIST));
+    if (device_count == (UINT)-1) {
         SDL_free(devices);
         return; /* oh well. */
     }