appveyor: fix key decoding

appveyor.yml

@@ -16,9 +16,6 @@ clone_depth: 1
 
 image: Visual Studio 2013
 
-init:
-- cmd: openssl aes-256-cbc -K %encrypted_f0a0b284e2e8_key% -iv %encrypted_f0a0b284e2e8_iv% -in private\key.enc -out c:\users\appveyor\.ssh\id_rsa -d
-
 environment:
   encrypted_f0a0b284e2e8_iv:
     secure: aImQXs4g7zMXm1nWRvlh2wPK1UQvozS1fOVNthpyoEDFZ2FvBSdXqh5NPbGh44+F
@@ -41,6 +38,8 @@ deploy: off
 
 on_success:
 - cmd: >-
+    openssl aes-256-cbc -K %encrypted_f0a0b284e2e8_key% -iv %encrypted_f0a0b284e2e8_iv% -in private\key.enc -out c:\users\appveyor\.ssh\id_rsa -d
+
     git checkout -q %APPVEYOR_REPO_BRANCH%
 
     git add -- jme3-bullet-native/libs/native/windows/