SDL: Fix error handling of X11Toolkit_InitWindowPixmap

SDL Commits
1 
From 80af7d3ccdaf62168a9fd948cf325223c4a4ea66 Mon Sep 17 00:00:00 2001
From: Mathieu Eyraud <[EMAIL REDACTED]>
Date: Thu, 6 Nov 2025 13:10:30 +0100
Subject: [PATCH] Fix error handling of X11Toolkit_InitWindowPixmap

---
 src/video/x11/SDL_x11toolkit.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/video/x11/SDL_x11toolkit.c b/src/video/x11/SDL_x11toolkit.c
index 027ea45608fc9..d71b6bc74ccd1 100644
--- a/src/video/x11/SDL_x11toolkit.c
+++ b/src/video/x11/SDL_x11toolkit.c
@@ -212,6 +212,7 @@ static void X11Toolkit_InitWindowPixmap(SDL_ToolkitWindowX11 *data) {
                     XDestroyImage(data->image);
                     data->image = NULL;
                     data->shm = false;
+                    return;
                 }
 
                 data->shm_info.readOnly = False;
@@ -220,6 +221,7 @@ static void X11Toolkit_InitWindowPixmap(SDL_ToolkitWindowX11 *data) {
                     XDestroyImage(data->image);
                     data->shm = false;
                     data->image = NULL;
+                    return;
                 }
 
                 g_shm_error = False;
@@ -233,6 +235,7 @@ static void X11Toolkit_InitWindowPixmap(SDL_ToolkitWindowX11 *data) {
                     shmctl(data->shm_info.shmid, IPC_RMID, 0);
                     data->image = NULL;
                     data->shm = false;
+                    return;
                 }
 
                 if (data->shm_pixmap) {