vim-patch:8.2.4706: buffer remains active with WinClosed and tabpages

Problem:    Buffer remains active if a WinClosed event throws an exception
            when there are multiple tabpages.
Solution:   Ignore aborting() when closing the buffer. (closes vim/vim#10101)
6a06940f8a

src/nvim/testdir/test_autocmd.vim

@@ -316,6 +316,23 @@ func Test_WinClosed_throws()
   augroup! test-WinClosed
 endfunc
 
+func Test_WinClosed_throws_with_tabs()
+  tabnew
+  let bnr = bufnr()
+  call assert_equal(1, bufloaded(bnr))
+  augroup test-WinClosed
+    autocmd WinClosed * throw 'foo'
+  augroup END
+  try
+    close
+  catch /.*/
+  endtry
+  call assert_equal(0, bufloaded(bnr))
+
+  autocmd! test-WinClosed
+  augroup! test-WinClosed
+endfunc
+
 func s:AddAnAutocmd()
   augroup vimBarTest
     au BufReadCmd * echo 'hello'

src/nvim/window.c

@@ -2885,7 +2885,7 @@ void win_close_othertab(win_T *win, int free_buf, tabpage_T *tp)
 
   if (win->w_buffer != NULL) {
     // Close the link to the buffer.
-    close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, false, false);
+    close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, false, true);
   }
 
   // Careful: Autocommands may have closed the tab page or made it the