From 5740bd808abfcb2ce3160a0fc62c47a7e7e0ab8e Mon Sep 17 00:00:00 2001
From: Mark Riedesel <mark@klowner.com>
Date: Fri, 23 Oct 2020 15:05:48 -0400
Subject: [PATCH] Fix android apk contents having mtime 1 month in future

minizip documentation describes tm_mon as expecting the number of months
since January - [0, 11], but the month returned by OS.get_date() is in
the range of [1, 12].

(cherry picked from commit 5fe902244a192b33ea9cff38ab870fe41909cd19)
---
 platform/android/export/export.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/android/export/export.cpp b/platform/android/export/export.cpp
index fe61a5d2aa..663c66fe9f 100644
--- a/platform/android/export/export.cpp
+++ b/platform/android/export/export.cpp
@@ -602,7 +602,7 @@ class EditorExportPlatformAndroid : public EditorExportPlatform {
 		zipfi.tmz_date.tm_hour = time.hour;
 		zipfi.tmz_date.tm_mday = date.day;
 		zipfi.tmz_date.tm_min = time.min;
-		zipfi.tmz_date.tm_mon = date.month;
+		zipfi.tmz_date.tm_mon = date.month - 1; // tm_mon is zero indexed
 		zipfi.tmz_date.tm_sec = time.sec;
 		zipfi.tmz_date.tm_year = date.year;
 		zipfi.dosDate = 0;