vendor: omni: Fix cookies

Change-Id: I96a096951c0506607fb36aed17bf73cbb6a59412
Signed-off-by: Humberto Borba <humberos@gmail.com>
diff --git a/build/tasks/cookies.mk b/build/tasks/cookies.mk
index 914dea6..7388e63 100644
--- a/build/tasks/cookies.mk
+++ b/build/tasks/cookies.mk
@@ -4,5 +4,5 @@
 .PHONY: cookies
 cookies: $(INTERNAL_OTA_PACKAGE_TARGET)
 	$(hide) ln -f $(INTERNAL_OTA_PACKAGE_TARGET) $(OMNI_TARGET_PACKAGE)
-	$(hide) $(MD5SUM) $(LINEAGE_TARGET_PACKAGE) | sed "s|$(PRODUCT_OUT)/||" > $(LINEAGE_TARGET_PACKAGE).md5sum
+	$(hide) $(MD5SUM) $(OMNI_TARGET_PACKAGE) | sed "s|$(PRODUCT_OUT)/||" > $(OMNI_TARGET_PACKAGE).md5sum
 	@echo -e "Package complete: $(OMNI_TARGET_PACKAGE)" >&2