fixed a bug I had introduced in src/specfem2D/enforce_acoustic_free_surface.f90 when I added a logical flag to check that the edge does not also belong to a periodic interface: the array was declared of size 1 but used with size NGLOB when periodic conditions were off
Merge pull request #50 from komatits/devel

fixed a bug I had introduced in src/specfem2D/enforce_acoustic_free_surf...