patch 8.1.1440: win_execute() test fails

Problem:    Win_execute() test fails.
Solution:   Adjust the expected error number.  Move to popup test.

Author: brammool

src/testdir/test_execute_func.vim

@@ -94,8 +94,6 @@ func Test_win_execute()
     let line = win_execute(popupwin, 'echo getline(1)')
     call assert_match('the popup win', line)
 
-    call assert_fails('call win_execute(popupwin, "bwipe!")', 'E937:')
-
     call popup_close(popupwin)
   endif
 

src/testdir/test_popupwin.vim

@@ -118,6 +118,7 @@ func Test_win_execute_not_allowed()
   call assert_fails('call win_execute(winid, "vsplit")', 'E994:')
   call assert_fails('call win_execute(winid, "close")', 'E994:')
   call assert_fails('call win_execute(winid, "bdelete")', 'E994:')
+  call assert_fails('call win_execute(winid, "bwipe!")', 'E994:')
   call assert_fails('call win_execute(winid, "tabnew")', 'E994:')
   call assert_fails('call win_execute(winid, "tabnext")', 'E994:')
   call assert_fails('call win_execute(winid, "next")', 'E994:')

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1440,
 /**/
     1439,
 /**/