os-release: do not add empty parentheses to VERSION

Setting DISTRO_CODENAME to an empty string previously led to a VERSION
field in /etc/os-release containing empty parantheses, e.g.
   DISTRO_VERSION = "5.0.12"
   DISTRO_CODENAME = ""
   ==> VERSION = "5.0.12 ()"

This is probably not what a user expects, especially since it is quite
common to set variables to empty strings to disable something in OE
based builds, but using `unset VARNAME` seems pretty uncommon.

Instead of adding the parentheses with the DISTRO_CODENAME if the
variable is in the datastore add them only if the variable is not empty.

(From OE-Core rev: 876cfd7df979ab1b0631d9ee8ecc3ebc5d2bc135)

Signed-off-by: Daniel Wagenknecht <dwagenknecht@emlix.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions