[Bug fortran/51090] libgfortran main.c missing NULL check on return value from getenv()

[joel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51090

--- Comment #1 from Joel Sherrill <joel at gcc dot gnu.org> 2011-11-10 23:52:48 UTC ---
Created attachment 25793
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25793
Proposed solution