SDL: Redefine XINPUT_CAPABILITIES_EX as an SDL typedef (93d7b)

From 93d7b6e50c3f625a86c2443deffc334cf0eda832 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 9 Feb 2024 01:26:45 -0800
Subject: [PATCH] Redefine XINPUT_CAPABILITIES_EX as an SDL typedef

mingw-w64 has added this from Proton (which added this from SDL), so we need to re-define it as a local symbol to avoid conflicting with mingw-w64 headers.

Fixes https://github.com/libsdl-org/SDL/issues/9031

(cherry picked from commit b7c61569f899982338bff0d5b9d35bd6d83485d3)
---
 src/core/windows/SDL_xinput.h             | 6 +++---
 src/joystick/windows/SDL_xinputjoystick.c | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/core/windows/SDL_xinput.h b/src/core/windows/SDL_xinput.h
index 396afcde7dd0..efdb86282e10 100644
--- a/src/core/windows/SDL_xinput.h
+++ b/src/core/windows/SDL_xinput.h
@@ -212,7 +212,7 @@ typedef struct
 #endif /* HAVE_XINPUT_H */
 
 /* This struct is not defined in XInput headers. */
-typedef struct _XINPUT_CAPABILITIES_EX
+typedef struct
 {
     XINPUT_CAPABILITIES Capabilities;
     WORD VendorId;
@@ -220,7 +220,7 @@ typedef struct _XINPUT_CAPABILITIES_EX
     WORD ProductVersion;
     WORD unk1;
     DWORD unk2;
-} XINPUT_CAPABILITIES_EX, *PXINPUT_CAPABILITIES_EX;
+} SDL_XINPUT_CAPABILITIES_EX;
 
 /* Forward decl's for XInput API's we load dynamically and use if available */
 typedef DWORD(WINAPI *XInputGetState_t)(
@@ -244,7 +244,7 @@ typedef DWORD(WINAPI *XInputGetCapabilitiesEx_t)(
     DWORD dwReserved,                       /* [in] Must be 1 */
     DWORD dwUserIndex,                      /* [in] Index of the gamer associated with the device */
     DWORD dwFlags,                          /* [in] Input flags that identify the device type */
-    XINPUT_CAPABILITIES_EX *pCapabilitiesEx /* [out] Receives the capabilities */
+    SDL_XINPUT_CAPABILITIES_EX *pCapabilitiesEx /* [out] Receives the capabilities */
 );
 
 typedef DWORD(WINAPI *XInputGetBatteryInformation_t)(
diff --git a/src/joystick/windows/SDL_xinputjoystick.c b/src/joystick/windows/SDL_xinputjoystick.c
index 3a2e912ca381..1ae7fb489957 100644
--- a/src/joystick/windows/SDL_xinputjoystick.c
+++ b/src/joystick/windows/SDL_xinputjoystick.c
@@ -117,7 +117,7 @@ static const char *GetXInputName(const Uint8 userid, BYTE SubType)
 
 static SDL_bool GetXInputDeviceInfo(Uint8 userid, Uint16 *pVID, Uint16 *pPID, Uint16 *pVersion)
 {
-    XINPUT_CAPABILITIES_EX capabilities;
+    SDL_XINPUT_CAPABILITIES_EX capabilities;
 
     if (!XINPUTGETCAPABILITIESEX || XINPUTGETCAPABILITIESEX(1, userid, 0, &capabilities) != ERROR_SUCCESS) {
         return SDL_FALSE;
@@ -143,7 +143,7 @@ static SDL_bool GetXInputDeviceInfo(Uint8 userid, Uint16 *pVID, Uint16 *pPID, Ui
 
 int SDL_XINPUT_GetSteamVirtualGamepadSlot(Uint8 userid)
 {
-    XINPUT_CAPABILITIES_EX capabilities;
+    SDL_XINPUT_CAPABILITIES_EX capabilities;
 
     if (XINPUTGETCAPABILITIESEX &&
         XINPUTGETCAPABILITIESEX(1, userid, 0, &capabilities) == ERROR_SUCCESS &&