[Bug target/98139] varasm.c fails to compile on AIX 7.2: -Werror=unused-variable

[ro at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98139

--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 49678
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49678&action=edit
Hacky patch.