SDL: events: Fix undefined behavior when disabling some event types (f88e0)

SDL Commits
1 
From f88e0aaac01d1e3117a0e264586640ce679e4ef2 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <[EMAIL REDACTED]>
Date: Tue, 29 Apr 2025 00:07:36 -0500
Subject: [PATCH] events: Fix undefined behavior when disabling some event
 types

Shifting a signed int left by 31 is UB.

(cherry picked from commit 39d31481854ef75812dda82b288790c30af882e4)
---
 src/events/SDL_events.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/events/SDL_events.c b/src/events/SDL_events.c
index 349d575015a07..ac1bad341455c 100644
--- a/src/events/SDL_events.c
+++ b/src/events/SDL_events.c
@@ -1823,7 +1823,7 @@ void SDL_SetEventEnabled(Uint32 type, bool enabled)
     Uint8 lo = (type & 0xff);
 
     if (SDL_disabled_events[hi] &&
-        (SDL_disabled_events[hi]->bits[lo / 32] & (1 << (lo & 31)))) {
+        (SDL_disabled_events[hi]->bits[lo / 32] & (1U << (lo & 31)))) {
         current_state = false;
     } else {
         current_state = true;
@@ -1832,7 +1832,7 @@ void SDL_SetEventEnabled(Uint32 type, bool enabled)
     if ((enabled != false) != current_state) {
         if (enabled) {
             SDL_assert(SDL_disabled_events[hi] != NULL);
-            SDL_disabled_events[hi]->bits[lo / 32] &= ~(1 << (lo & 31));
+            SDL_disabled_events[hi]->bits[lo / 32] &= ~(1U << (lo & 31));
 
             // Gamepad events depend on joystick events
             switch (type) {
@@ -1863,7 +1863,7 @@ void SDL_SetEventEnabled(Uint32 type, bool enabled)
             }
             // Out of memory, nothing we can do...
             if (SDL_disabled_events[hi]) {
-                SDL_disabled_events[hi]->bits[lo / 32] |= (1 << (lo & 31));
+                SDL_disabled_events[hi]->bits[lo / 32] |= (1U << (lo & 31));
                 SDL_FlushEvent(type);
             }
         }
@@ -1882,7 +1882,7 @@ bool SDL_EventEnabled(Uint32 type)
     Uint8 lo = (type & 0xff);
 
     if (SDL_disabled_events[hi] &&
-        (SDL_disabled_events[hi]->bits[lo / 32] & (1 << (lo & 31)))) {
+        (SDL_disabled_events[hi]->bits[lo / 32] & (1U << (lo & 31)))) {
         return false;
     } else {
         return true;