[Bug fortran/85840] Memory leak in write.c

[jjcogliati-r1 at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85840

--- Comment #7 from Joshua Cogliati <jjcogliati-r1 at yahoo dot com> ---
Created attachment 44185
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44185&action=edit
Patch by checking against original buffer

This is one possible patch for this problem, it just checks if the buffer is at
a different address than the stack buffer.

It does fix the problem in my test case.