gdb-add-index always generates an error when libdebuginfod wasn't compiled in

gdb-add-index runs gdb with -iex 'set debuginfod enabled off'.  If gdb
is not compiled against libdebuginfod this causes an unnecessary error
message to be printed to stderr indicating that gdb was not built with
debuginfod support.

Fix this by changing the 'set debuginfod enabled off' command to a
no-op when gdb isn't built with libdebuginfod.
1 file changed