Add test-arena to make file.

Makefile.am

@@ -29,6 +29,8 @@ yarac_SOURCES = args.c args.h common.h yarac.c
 yarac_LDADD = -Llibyara/.libs -lyara
 
 test_alignment_SOURCES = tests/test-alignment.c
+test_arena_SOURCES = tests/test-arena.c
+test_arena_LDADD = libyara/.libs/libyara.a
 test_atoms_SOURCES = tests/test-atoms.c tests/util.c libyara/atoms.c
 test_atoms_LDADD = libyara/.libs/libyara.a
 test_rules_SOURCES = tests/test-rules.c tests/util.c
@@ -52,7 +54,9 @@ test_re_split_LDADD = libyara/.libs/libyara.a
 TESTS = $(check_PROGRAMS)
 TESTS_ENVIRONMENT = TOP_SRCDIR=$(top_srcdir)
 
-check_PROGRAMS = test-alignment \
+check_PROGRAMS = \
+  test-arena \
+  test-alignment \
   test-atoms \
   test-api \
   test-rules \