From 25252de8a5c82f782e819a4d095c7ced6dcfdf4f Mon Sep 17 00:00:00 2001
From: Jumpei Matsuda <jmatsu.drm@gmail.com>
Date: Mon, 7 Oct 2019 14:24:05 +0900
Subject: [PATCH] Assign nil surely if no signature is found

---
 lib/android_apk.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/android_apk.rb b/lib/android_apk.rb
index d53a0e5..05baace 100644
--- a/lib/android_apk.rb
+++ b/lib/android_apk.rb
@@ -323,6 +323,8 @@ def self.read_signature(apk, filepath)
     if exit_status.success? && !certs_hunk.nil?
       signatures = certs_hunk.scan(/(?:[0-9a-zA-Z]{2}:?){20}/)
       apk.signature = signatures[0].delete(":").downcase if signatures.length == 1
+    else
+      apk.signature = nil # make sure being nil
     end
   end