error: SDL's allocators now call SDL_OutOfMemory on error.

This means the allocator's caller doesn't need to use SDL_OutOfMemory directly
if the allocation fails.

This applies to the usual allocators: SDL_malloc, SDL_calloc, SDL_realloc
(all of these regardless of if the app supplied a custom allocator or we're
using system malloc() or an internal copy of dlmalloc under the hood),
SDL_aligned_alloc, SDL_small_alloc, SDL_strdup, SDL_asprintf, SDL_wcsdup...
probably others. If it returns something you can pass to SDL_free, it should
work.

The caller might still need to use SDL_OutOfMemory if something that wasn't
SDL allocated the memory: operator new in C++ code, Objective-C's alloc
message, win32 GlobalAlloc, etc.

Fixes #8642.

src/render/software/SDL_render_sw.c

@@ -1111,14 +1111,12 @@ SDL_Renderer *SW_CreateRendererForSurface(SDL_Surface *surface)
 
     renderer = (SDL_Renderer *)SDL_calloc(1, sizeof(*renderer));
     if (!renderer) {
-        SDL_OutOfMemory();
         return NULL;
     }
 
     data = (SW_RenderData *)SDL_calloc(1, sizeof(*data));
     if (!data) {
         SW_DestroyRenderer(renderer);
-        SDL_OutOfMemory();
         return NULL;
     }
     data->surface = surface;