[PATCH 13/13] flatbuffers: Convert confusing append to override syntax

[Michal Sieron <michalwsieron@gmail.com>]

While in this case `SYSROOT_PREPROCESS_FUNCS:class-target +=` wouldn't
result in any unwanted override, there is no guarantee there won't be a
change, which would be hidden by this override. To avoid any surprises
in the future let's use `:append:class-target =` syntax here.

Signed-off-by: Michal Sieron <michalwsieron@gmail.com>
---
 meta-oe/recipes-devtools/flatbuffers/flatbuffers.bb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta-oe/recipes-devtools/flatbuffers/flatbuffers.bb b/meta-oe/recipes-devtools/flatbuffers/flatbuffers.bb
index c51a49ba01..289330ee04 100644
--- a/meta-oe/recipes-devtools/flatbuffers/flatbuffers.bb
+++ b/meta-oe/recipes-devtools/flatbuffers/flatbuffers.bb
@@ -25,7 +25,7 @@ inherit cmake python3native
 rm_flatc_cmaketarget_for_target() {
     rm -f "${SYSROOT_DESTDIR}/${libdir}/cmake/flatbuffers/FlatcTargets.cmake"
 }
-SYSROOT_PREPROCESS_FUNCS:class-target += "rm_flatc_cmaketarget_for_target"
+SYSROOT_PREPROCESS_FUNCS:append:class-target = " rm_flatc_cmaketarget_for_target"
 
 FILES:${PN}-compiler = "${bindir}"
 

-- 
2.53.0