Fixing build script 3.

Author: hipersayanX

ports/ci/windows-msys/test.sh

@@ -57,12 +57,12 @@ sleep 20
 
 echo "Testing the virtual camera in DirectShow"
 
-"${COMPILER}" -o testds.exe ports/ci/windows-msys/testds.cpp -lole32 -loleaut32 -lstrmiids -lquartz
+"${COMPILER_CXX}" -o testds.exe ports/ci/windows-msys/testds.cpp -lole32 -loleaut32 -lstrmiids -lquartz
 ./testds.exe
 
 echo "Testing the virtual camera in Media Foundation"
 
-"${COMPILER}" -o testmf.exe ports/ci/windows-msys/testmf.cpp -lole32 -lmf -lmfplat -lmfreadwrite -lmfuuid
+"${COMPILER_CXX}" -o testmf.exe ports/ci/windows-msys/testmf.cpp -lole32 -lmf -lmfplat -lmfreadwrite -lmfuuid
 ./testmf.exe
 
 echo "Checking if the services are up"