M CHANGES → CHANGES

@@ -42,6 +42,7 @@ - GBA Memory: Fix ldm {pc}
  - GBA Video: Fix out-of-order OBJWIN
  - GBA: Count up timers should not count themselves
  - GBA Savedata: Fix savedata sync timer
+ - GBA Savedata: Only unmap savedata if present
 Misc:
  - 3DS: Use blip_add_delta_fast for a small speed improvement
  - OpenGL: Log shader compilation failure

M src/gba/savedata.c → src/gba/savedata.c

@@ -46,7 +46,9 @@
 void GBASavedataDeinit(struct GBASavedata* savedata) {
 	if (savedata->vf) {
 		size_t size = GBASavedataSize(savedata);
-		savedata->vf->unmap(savedata->vf, savedata->data, size);
+		if (savedata->data) {
+			savedata->vf->unmap(savedata->vf, savedata->data, size);
+		}
 		savedata->vf = NULL;
 	} else {
 		switch (savedata->type) {