configure: another try on fixing osx/mingw SDL

configure

@@ -2943,7 +2943,7 @@ SDL_CONFIG="${cross_prefix}sdl-config"
 if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
     sdl_cflags=$("${SDL_CONFIG}" --cflags)
     sdl_libs=$("${SDL_CONFIG}" --libs)
-    check_func_headers SDL.h SDL_Init $sdl_cflags $sdl_libs &&
+    check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
     enable sdl &&
     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size