vim-patch:8.0.0256: missing changes to one file breaks test

Problem:    Tests fail because some changes were not included.
Solution:   Add changes to evalfunc.c
https://github.com/vim/vim/commit/3a29abcb6154d9f55ca8abd6d97e5822b97ac4b3

2 files changed, 8 insertions, 13 deletions

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index ffea88aa83..d1f8ce75fa 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -14806,18 +14806,14 @@ static void f_setpos(typval_T *argvars, typval_T *rettv, FunPtr fptr)
         pos.col = 0;
       }
       if (name[0] == '.' && name[1] == NUL) {
-        // set cursor
-        if (fnum == curbuf->b_fnum) {
-          curwin->w_cursor = pos;
-          if (curswant >= 0) {
-            curwin->w_curswant = curswant - 1;
-            curwin->w_set_curswant = false;
-          }
-          check_cursor();
-          rettv->vval.v_number = 0;
-        } else {
-          EMSG(_(e_invarg));
+        // set cursor; "fnum" is ignored
+        curwin->w_cursor = pos;
+        if (curswant >= 0) {
+          curwin->w_curswant = curswant - 1;
+          curwin->w_set_curswant = false;
         }
+        check_cursor();
+        rettv->vval.v_number = 0;
       } else if (name[0] == '\'' && name[1] != NUL && name[2] == NUL)   {
         // set mark
         if (setmark_pos((uint8_t)name[1], &pos, fnum) == OK) {
diff --git a/test/functional/eval/setpos_spec.lua b/test/functional/eval/setpos_spec.lua
index 6a8b3a8732..935f387bcc 100644
--- a/test/functional/eval/setpos_spec.lua
+++ b/test/functional/eval/setpos_spec.lua
@@ -27,9 +27,8 @@ describe('setpos() function', function()
     eq(getpos("."), {0, 2, 1, 0})
     setpos(".", {2, 1, 1, 0})
     eq(getpos("."), {0, 1, 1, 0})
-    -- Ensure get an error attempting to set position to another buffer
     local ret = exc_exec('call setpos(".", [1, 1, 1, 0])')
-    eq('Vim(call):E474: Invalid argument', ret)
+    eq(0, ret)
   end)
   it('can set lowercase marks in the current buffer', function()
     setpos("'d", {0, 2, 1, 0})