Fix PATH in AppVeyor config

Author: aldanor

appveyor.yml

@@ -17,12 +17,12 @@ environment:
 install:
   - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-${env:CHANNEL}-${env:TARGET}.msi"
   - ps: Start-Process -FilePath msiexec -ArgumentList /i, rust-${env:CHANNEL}-${env:TARGET}.msi, INSTALLDIR="C:\Rust", /quiet -Wait
+  - set PATH=%PATH%;C:\Rust\bin;%HDF5_BINDIR%
   - rustc -vV
   - cargo -vV
   - ps: Invoke-WebRequest "http://www.hdfgroup.org/ftp/HDF5/current/bin/windows/extra/hdf5-1.8.16-win64-vs2015-shared.zip" -OutFile hdf5.zip
   - 7z x hdf5.zip -y
   - ps: Start-Process -FilePath msiexec -ArgumentList /i, "hdf5\HDF5-1.8.16-win64.msi", /quiet -Wait
-  - set PATH=%PATH%;C:\Rust\bin;%HDF5_BINDIR%
 
 test_script:
   - cd %APPVEYOR_BUILD_FOLDER%\libhdf5-lib