recipes-devtools: fix segfault in lib32-gcc with "." multilib_dir
When enabling a lib32-gcc in a 64 bit build, without doing any
other configuration, the mutilib dir is unspecified, which is
represented internally in gcc as "." and as such uncovers an
invalid free on a non-malloc'd pointer.
As suggested by the gcc folks, simply make sure the "." case
is also stored in a malloc'd pointer, so that the intended
runtime behaviour of the code remains unchanged.
Patch has been accepted by upstream maintainers of gcc.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
