Make CMake build test on AppVeyor mandatory

Signed-off-by: Ralph Giles <[email protected]>

Author: adrianbroher

appveyor.yml

@@ -10,10 +10,6 @@ environment:
   - BUILD_SYSTEM: MSVC
   - BUILD_SYSTEM: CMAKE
 
-matrix:
-  allow_failures:
-  - BUILD_SYSTEM: CMAKE
-
 install:
 - git clone -q https://github.com/xiph/ogg.git %APPVEYOR_BUILD_FOLDER%\..\libogg
 - if "%BUILD_SYSTEM%"=="MSVC" msbuild "%APPVEYOR_BUILD_FOLDER%\..\libogg\win32\VS2015\libogg_static.sln" /m /v:minimal /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" /property:Configuration=%CONFIGURATION%;Platform=%PLATFORM%