patch 9.0.2042: Test_cq_zero_exmode fails without channel feature

Problem:  Test_cq_zero_exmode fails without channel feature
Solution: Make the test check the channel feature

closes: #13365

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_startup.vim

@@ -1353,6 +1353,8 @@ endfunc
 
 " Test that -cq works as expected
 func Test_cq_zero_exmode()
+  CheckFeature channel
+
   let logfile = 'Xcq_log.txt'
   let out = system(GetVimCommand() .. ' --clean --log ' .. logfile .. ' -es -X -c "argdelete foobar" -c"7cq"')
   call assert_equal(8, v:shell_error)

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2042,
 /**/
     2041,
 /**/