Merge branch '399-follow-up-from-resolve-cleanup-in-other-cmakelists-txt' into 'master'

Resolve "Follow-up from "Resolve "Cleanup in other CMakeLists.txt"""

Closes #399

See merge request !211

src/Solvers/CMakeLists.txt

@@ -39,7 +39,7 @@ if (ENABLE_AMR)
     
     if (AMREX_ENABLE_FBASELIB)
         list (APPEND _SRCS BoxLibSolvers/FMGPoissonSolver.cpp)
-        list (APPEND AMR_HDRS BoxLibSolvers/FMGPoissonSolver.h)
+        list (APPEND HDRS BoxLibSolvers/FMGPoissonSolver.h)
     endif ()
 
     if (ENABLE_AMR_MG_SOLVER)