build: resolve compile error due to missing nfacct CPPFLAGS

Fixes this error:

make[3]: Entering directory "/home/jengelh/code/ulogd2/output"
  CC       ulogd_output_XML.lo
ulogd_output_XML.c:31:49: fatal error:
libnetfilter_acct/libnetfilter_acct.h: No such file or directory

(Note that pkgconfig-provided cflags are actually cppflags, so
I add ${LIBNETFILTER_ACCT_CFLAGS} to AM_CPPFLAGS.)

Signed-off-by: Jan Engelhardt <jengelh@inai.de>

0 files changed, 0 insertions, 0 deletions