vid_software_palette 1 causes black screen when resizing game window

see:
https://github.com/QW-Group/ezquake-source/issues/858

Index: src/vid_sdl2.c
--- src/vid_sdl2.c.orig
+++ src/vid_sdl2.c
@@ -226,11 +226,7 @@ cvar_t r_verbose                  = {"vid_verbose",   
 cvar_t r_showextensions           = {"vid_showextensions",         "0",       CVAR_SILENT };
 cvar_t gl_multisamples            = {"gl_multisamples",            "0",       CVAR_LATCH_GFX | CVAR_AUTO }; // It's here because it needs to be registered before window creation
 cvar_t vid_gammacorrection        = {"vid_gammacorrection",        "0",       CVAR_LATCH_GFX };
-#ifdef __APPLE__
 cvar_t vid_software_palette       = {"vid_software_palette",       "0",       CVAR_NO_RESET | CVAR_LATCH_GFX };
-#else
-cvar_t vid_software_palette       = {"vid_software_palette",       "1",       CVAR_NO_RESET | CVAR_LATCH_GFX };
-#endif
 
 cvar_t vid_framebuffer             = {"vid_framebuffer",               "0",       CVAR_NO_RESET | CVAR_LATCH_GFX, conres_changed_callback };
 cvar_t vid_framebuffer_blit        = {"vid_framebuffer_blit",          "0",       CVAR_NO_RESET };
