re PR fortran/54678 (second call to get_environment_variable gives valgrind warning with 8-byte integers)

2013-01-06  Tobias Burnus  <burnus@net-b.de>

        PR fortran/54678
        * intrinsics/env.c (get_environment_variable_i8): Don't use
        uninitialized variable.

From-SVN: r194948