[Bug libgomp/82901] GOACC_declare calls GOACC_enter_exit_data with async arg 0

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82901

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 42564
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42564&action=edit
Tentative patch