SDL: joystick: virtual: Fix event injection for axes/hats

SDL Commits
1 
From db5cd8c694086c4bd54bee52cec48e4b8907fd51 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <[EMAIL REDACTED]>
Date: Sat, 12 Jun 2021 14:57:34 +0100
Subject: [PATCH] joystick: virtual: Fix event injection for axes/hats

SDL_JoystickSetVirtualAxisInner() and SDL_JoystickSetVirtualHatInner()
did not properly sanitize the 'axis' and 'hat' parameters.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 src/joystick/virtual/SDL_virtualjoystick.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/joystick/virtual/SDL_virtualjoystick.c b/src/joystick/virtual/SDL_virtualjoystick.c
index ec1c42cc3f..be32b2de1b 100644
--- a/src/joystick/virtual/SDL_virtualjoystick.c
+++ b/src/joystick/virtual/SDL_virtualjoystick.c
@@ -176,7 +176,7 @@ SDL_JoystickSetVirtualAxisInner(SDL_Joystick * joystick, int axis, Sint16 value)
     }
 
     hwdata = (joystick_hwdata *)joystick->hwdata;
-    if (axis < 0 || axis >= hwdata->nbuttons) {
+    if (axis < 0 || axis >= hwdata->naxes) {
         SDL_UnlockJoysticks();
         return SDL_SetError("Invalid axis index");
     }
@@ -226,7 +226,7 @@ SDL_JoystickSetVirtualHatInner(SDL_Joystick * joystick, int hat, Uint8 value)
     }
 
     hwdata = (joystick_hwdata *)joystick->hwdata;
-    if (hat < 0 || hat >= hwdata->nbuttons) {
+    if (hat < 0 || hat >= hwdata->nhats) {
         SDL_UnlockJoysticks();
         return SDL_SetError("Invalid hat index");
     }