fix to adfvdiscr example

5 jobs for master in 8 minutes and 41 seconds (queued for 22 seconds)
Status Job ID Name Coverage
  Build
failed #530
build_debug

00:02:10

passed #523
build_opt

00:06:31

failed #522
build_debug

00:02:49

 
  Test
skipped #524
test_debug
skipped #525
test_opt
 
Name Stage Failure
failed
build_debug Build There is an unknown failure, please try again
cd /opt/gitlab-ci-multi-runner/builds/fe725eaf/0/terekhov/INMOST/build_debug/Tests/solver_test003 && /usr/bin/cmake -E cmake_link_script CMakeFiles/solver_test003.dir/link.txt --verbose=1
/usr/bin/c++ -fopenmp -g -rdynamic -Wl,-rpath -Wl,/usr/lib64 -Wl,--enable-new-dtags CMakeFiles/solver_test003.dir/main.cpp.o -o solver_test003 ../../libinmost.a -lmpi_cxx -lmpi
collect2: error: ld returned 1 exit status
make[2]: *** [Tests/solver_test003/CMakeFiles/solver_test003.dir/build.make:98: Tests/solver_test003/solver_test003] Error 1
make[2]: Leaving directory '/opt/gitlab-ci-multi-runner/builds/fe725eaf/0/terekhov/INMOST/build_debug'
make[1]: *** [CMakeFiles/Makefile2:1760: Tests/solver_test003/CMakeFiles/solver_test003.dir/all] Error 2
make[1]: Leaving directory '/opt/gitlab-ci-multi-runner/builds/fe725eaf/0/terekhov/INMOST/build_debug'
make: *** [Makefile:163: all] Error 2
ERROR: Job failed: exit status 1