maint: avoid new syntax-check failure

* cfg.mk (exclude_file_name_regexp--sc_prohibit_defined_have_decl_tests):
Exempt autoconf.texi's test of "#if defined HAVE_DECL_MALLOC".

diff --git a/cfg.mk b/cfg.mk
index a992abbad0be722bc796e45790b936140af6c721..4300f04d7c0a7bcbd55e6fe4b62c7c31dc44d07f 100644 (file)
--- a/cfg.mk
+++ b/cfg.mk
@@ -137,3 +137,5 @@ exclude_file_name_regexp--sc_useless_cpp_parens = \
 exclude_file_name_regexp--sc_trailing_blank = ^build-aux/texinfo\.tex$$
 exclude_file_name_regexp--sc_two_space_separator_in_usage = \
   ^build-aux/gnupload$$
+exclude_file_name_regexp--sc_prohibit_defined_have_decl_tests = \
+  ^doc/autoconf\.texi$$