fix gpgx_swap_disc, re-enable disk buttons (seems to work?)

src/BizHawk.Emulation.Cores/Consoles/Sega/gpgx64/GPGX.cs

@@ -359,7 +359,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 			if (!Core.gpgx_get_control(input, inputsize))
 				throw new Exception($"{nameof(Core.gpgx_get_control)}() failed");
 
-			ControlConverter = new GPGXControlConverter(input, false); // _cds != null);
+			ControlConverter = new GPGXControlConverter(input, _cds != null);
 			ControllerDefinition = ControlConverter.ControllerDef;
 		}
 

waterbox/gpgx/core/cd_hw/cdd.c

@@ -157,13 +157,14 @@ void cdd_hotswap(const toc_t *toc)
 	if (toc)
 	{
 		cdd.loaded = 1;
-		memcpy(&cdd.toc, &toc, sizeof(cdd.toc));
+		memcpy(&cdd.toc, toc, sizeof(cdd.toc));
 	}
 	else
 	{
 		cdd.loaded = 0;
 		memset(&cdd.toc, 0x00, sizeof(cdd.toc));
 	}
+
 	cdd_reset();
 }