Bitbake fails to run when an empty element exists in $PATH. Avoid
creating this situation when $CROSSPATH is not set.
This fixes bug [YOCTO #3101]
(From OE-Core rev: 1f7f590369eaa76dc970c9cffd1f0db53ce08c00)
Signed-off-by: Scott Garman <scott.a.garman@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>