Merge "Add aosp patch to fix filesystem check fail when mounting." am: b1b772592b

Original change: https://android-review.googlesource.com/c/platform/external/fsck_msdos/+/1696727

Change-Id: If7a8744689d58c16da2b5dd526ca4a3fcf15bf07
diff --git a/check.c b/check.c
index 9519315..c164316 100644
--- a/check.c
+++ b/check.c
@@ -186,8 +186,10 @@
 	free(fat);
 	close(dosfs);
 
-	if (mod & (FSFATMOD|FSDIRMOD))
+	if (mod & (FSFATMOD|FSDIRMOD)){
 		pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
+		return 4;
+	}
 
 	return ret;
 }