Port surflock.c to SDL3

Author: ankith26

src_c/meson.build

@@ -144,7 +144,6 @@ surface = py.extension_module(
 endif
 
 # TODO: support SDL3
-if sdl_api != 3
 surflock = py.extension_module(
     'surflock',
     'surflock.c',
@@ -153,7 +152,6 @@ surflock = py.extension_module(
     install: true,
     subdir: pg,
 )
-endif
 
 # TODO: support SDL3
 if sdl_api != 3

src_c/surflock.c

@@ -99,7 +99,11 @@ pgSurface_LockBy(pgSurfaceObject *surfobj, PyObject *lockobj)
     if (surf->subsurface != NULL) {
         pgSurface_Prep(surfobj);
     }
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    if (!SDL_LockSurface(surf->surf)) {
+#else
     if (SDL_LockSurface(surf->surf) == -1) {
+#endif
         PyErr_SetString(PyExc_RuntimeError, "error locking surface");
         return 0;
     }