patch 9.1.1331: Leaking memory with cmdcomplete()

Problem:  Leaking memory with cmdcomplete()
          (zeertzjq, after v9.1.1329)
Solution: free the memory (Girish Palya)

closes: #17190

Signed-off-by: Girish Palya <girishji@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/cmdexpand.c

@@ -1244,7 +1244,10 @@ showmatches(expand_T *xp, int wildmenu UNUSED)
 
     // Save cmdline before expansion
     if (ccline->cmdbuff != NULL)
+    {
+	vim_free(cmdline_orig);
 	cmdline_orig = vim_strnsave(ccline->cmdbuff, ccline->cmdlen);
+    }
 
     if (xp->xp_numfiles == -1)
     {

src/ex_getln.c

@@ -1916,8 +1916,7 @@ getcmdline_int(
 	}
 
 	// Trigger CmdlineLeavePre autocommand
-	if (ccline.cmdfirstc != NUL && (c == '\n' || c == '\r' || c == K_KENTER
-		    || c == ESC || c == Ctrl_C))
+	if (c == '\n' || c == '\r' || c == K_KENTER || c == ESC || c == Ctrl_C)
 	    trigger_cmd_autocmd(cmdline_type, EVENT_CMDLINELEAVEPRE);
 
 	// The wildmenu is cleared if the pressed key is not used for

src/testdir/test_autocmd.vim

@@ -2038,6 +2038,12 @@ func Test_Cmdline_Trigger()
   call assert_equal('', g:log)
   call feedkeys(":echo hello", "tx")
   call assert_equal('CmdlineLeavePre', g:log)
+  let g:count = 0
+  autocmd CmdlineLeavePre * let g:count += 1
+  call feedkeys(":let c = input('? ')\<cr>B\<cr>", "tx")
+  call assert_equal(2, g:count)
+  unlet! g:count
+  unlet! g:log
   bw!
 endfunc
 

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1331,
 /**/
     1330,
 /**/