Update appveyor.yml

Run inno script after build.

appveyor.yml

@@ -35,7 +35,6 @@ install:
   - set PATH=%PATH%;"C:\\Program Files (x86)\\Inno Setup 5"
   - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/5/7/b/57b2947c-7221-4f33-b35e-2fc78cb10df4/vc_redist.x64.exe -OutFile .\packaging\windows-innosetup\vc_redist.x64.exe
   - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/1/d/8/1d8137db-b5bb-4925-8c5d-927424a2e4de/vc_redist.x86.exe -OutFile .\packaging\windows-innosetup\vc_redist.x86.exe
-  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" iscc packaging\windows-innosetup\script.iss
   
 cache:
   - code\assimp.dir\%CONFIGURATION%
@@ -54,6 +53,7 @@ build:
   project: Assimp.sln
   
 after_build:
+  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" iscc packaging\windows-innosetup\script.iss
   - 7z a assimp.7z bin\%CONFIGURATION%\* lib\%CONFIGURATION%\*
 
 test_script: