test_substitution: Fix failing test.

Revert the -r392190 change.  The original test was correct.  The CDR code
was actually returning an unititialized buffer.
........

Merged revisions 398025 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@398026 65c4cc65-6c06-0410-ace0-fbb531ad65f3

tests/test_substitution.c

@@ -288,7 +288,7 @@ AST_TEST_DEFINE(test_substitution)
 	pbx_builtin_setvar_helper(c, "list1", "ab&cd&ef");
 	TEST(test_expected_result(test, c, "${LISTFILTER(list1,&,cd)}", "ab&ef"));
 	TEST(test_expected_result(test, c, "${SHELL(printf '%d' 123)},${SHELL(printf '%d' 456)}", "123,456"));
-	TEST(test_expected_result(test, c, "${foo},${CDR(answer)},${SHELL(printf '%d' 456)}", "123,0.000000,456"));
+	TEST(test_expected_result(test, c, "${foo},${CDR(answer)},${SHELL(printf '%d' 456)}", "123,,456"));
 	TEST(test_expected_result(test, c, "${foo},${CDR(answer,u)},${SHELL(printf '%d' 456)}", "123,0.000000,456"));
 	TEST(test_expected_result(test, c, "${foo},${this_does_not_exist},${THIS_DOES_NOT_EXIST(either)}", "123,,"));
 #undef TEST