strbuf: copy varargs-list in case of reuse
It's not legal to reuse the varargs list without taking a copy, so let's do that before we use it.
Signed-off-by: Erik Faye-Lund erik.faye-lund@collabora.com
It's not legal to reuse the varargs list without taking a copy, so let's do that before we use it.
Signed-off-by: Erik Faye-Lund erik.faye-lund@collabora.com