patch 8.2.1742: test still fails without the terminal feature

Problem:    Test still fails without the terminal feature.
Solution:   Put check for terminal feature in separate function.

src/testdir/test_vim9_script.vim

@@ -2831,9 +2831,14 @@ def Test_unset_any_variable()
   CheckDefAndScriptSuccess(lines)
 enddef
 
-def Test_define_func_at_command_line()
+func Test_define_func_at_command_line()
   CheckRunVimInTerminal
 
+  " call indirectly to avoid compilation error for missing functions
+  call Run_Test_define_func_at_command_line()
+endfunc
+
+def Run_Test_define_func_at_command_line()
   # run in a separate Vim instance to avoid the script context
   let lines =<< trim END
     func CheckAndQuit()

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1742,
 /**/
     1741,
 /**/