[gnome-continuous-yocto/gnomeostree-3.28-rocko: 6928/8267] cve-check.bbclass: use weak assignment for default CVE_PRODUCT

[Emmanuele Bassi <ebassi src gnome org>]

commit edaeec5809b7bb0f1817b92a5e6af6b686598ea5
Author: Mikko Rapeli <mikko rapeli bmw de>
Date:   Thu Jul 20 16:23:09 2017 +0300

    cve-check.bbclass: use weak assignment for default CVE_PRODUCT
    
    This way also bbclasses can override it. For example kernel.bbclass
    could set CVE_PRODUCT to linux_kernel for all users of the class
    which compile Linux kernels.
    
    (From OE-Core rev: 74672a7de5ada45ab8e25b89cbdea3ec33b63b7f)
    
    Signed-off-by: Mikko Rapeli <mikko rapeli bmw de>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/cve-check.bbclass |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meta/classes/cve-check.bbclass b/meta/classes/cve-check.bbclass
index 6f5b0f5..8dde4a2 100644
--- a/meta/classes/cve-check.bbclass
+++ b/meta/classes/cve-check.bbclass
@@ -22,7 +22,7 @@
 
 # The product name that the CVE database uses.  Defaults to BPN, but may need to
 # be overriden per recipe (for example tiff.bb sets CVE_PRODUCT=libtiff).
-CVE_PRODUCT ?= "${BPN}"
+CVE_PRODUCT ??= "${BPN}"
 
 CVE_CHECK_DB_DIR ?= "${DL_DIR}/CVE_CHECK"
 CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvd.db"