patch 9.1.0384: tests: vt420 terminfo entry may not be found

Problem:  tests: vt420 terminfo entry may not be found
          (Shane-XB-Qian)
Solution: check existence of terminfo vt420 and infocmp command

related: #14595
closes: #14677

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_terminal3.vim b/src/testdir/test_terminal3.vim
index 223bcc5..848e3fa 100644
--- a/src/testdir/test_terminal3.vim
+++ b/src/testdir/test_terminal3.vim
@@ -935,7 +935,14 @@
   CheckRunVimInTerminal
   " For Termcap
   CheckUnix
-  let rows=15
+  CheckExecutable infocmp
+  let a = system('infocmp vt420')
+  if v:shell_error
+     " reset v:shell_error
+     let a = system('true')
+     throw 'Skipped: vt420 terminfo not available'
+  endif
+  let rows = 15
   call writefile([':set term=vt420'], 'Xterm420', 'D')
 
   let buf = RunVimInTerminal('-S Xterm420', #{rows: rows})
diff --git a/src/version.c b/src/version.c
index 0f7ec89..739f01f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    384,
+/**/
     383,
 /**/
     382,