patch 8.0.0323: one second pause when running cmdline test

Problem:    When running the command line tests there is a one second wait.
Solution:   Change an Esc to Ctrl-C. (Yegappan Lakshmanan)

Author: brammool

src/testdir/test_cmdline.vim

@@ -353,7 +353,7 @@ func Test_getcmdtype()
   call feedkeys("?MyCmd a\<C-R>=Check_cmdline('?')\<CR>\<Esc>", "xt")
 
   call feedkeys(":call input('Answer?')\<CR>", "t")
-  call feedkeys("MyCmd a\<C-R>=Check_cmdline('@')\<CR>\<Esc>", "xt")
+  call feedkeys("MyCmd a\<C-R>=Check_cmdline('@')\<CR>\<C-C>", "xt")
 
   call feedkeys(":insert\<CR>MyCmd a\<C-R>=Check_cmdline('-')\<CR>\<Esc>", "xt")
 

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    323,
 /**/
     322,
 /**/