patch 8.2.1360: stray error for white space after expression

Problem:    Stray error for white space after expression.
Solution:   Ignore trailing white space. (closes #6608)

src/eval.c

@@ -300,7 +300,7 @@ eval_expr_typval(typval_T *expr, typval_T *argv, int argc, typval_T *rettv)
 	s = skipwhite(s);
 	if (eval1_emsg(&s, rettv, NULL) == FAIL)
 	    return FAIL;
-	if (*s != NUL)  // check for trailing chars after expr
+	if (*skipwhite(s) != NUL)  // check for trailing chars after expr
 	{
 	    clear_tv(rettv);
 	    semsg(_(e_invexpr2), s);

src/testdir/test_filter_map.vim

@@ -11,6 +11,7 @@ func Test_filter_map_list_expr_string()
   call assert_equal([2, 4, 6, 8], map([1, 2, 3, 4], 'v:val * 2'))
   call assert_equal([0, 2, 4, 6], map([1, 2, 3, 4], 'v:key * 2'))
   call assert_equal([9, 9, 9, 9], map([1, 2, 3, 4], 9))
+  call assert_equal([7, 7, 7], map([1, 2, 3], ' 7 '))
 endfunc
 
 " dict with expression string

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1360,
 /**/
     1359,
 /**/