patch 9.0.0299: error messages for setcmdline() could be better

Problem:    Error messages for setcmdline() could be better.
Solution:   Use more specific error messages. (Yegappan Lakshmanan,
            closes #10995)
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 121ff25..81f0c6f 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3273,8 +3273,8 @@
     call assert_equal(a:pos, getcmdpos())
 
     call assert_fails('call setcmdline("' .. a:text .. '", -1)', 'E487:')
-    call assert_fails('call setcmdline({}, 0)', 'E928:')
-    call assert_fails('call setcmdline("' .. a:text .. '", {})', 'E728:')
+    call assert_fails('call setcmdline({}, 0)', 'E1174:')
+    call assert_fails('call setcmdline("' .. a:text .. '", {})', 'E1210:')
 
     return ''
   endfunc
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 227e28c..e3ebc3e 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -3659,8 +3659,8 @@
 
 def Test_setcmdline()
   v9.CheckDefAndScriptSuccess(['setcmdline("ls", 2)'])
-  v9.CheckDefAndScriptFailure(['setcmdline(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E928: String required'])
-  v9.CheckDefAndScriptFailure(['setcmdline("ls", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1030: Using a String as a Number'])
+  v9.CheckDefAndScriptFailure(['setcmdline(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckDefAndScriptFailure(['setcmdline("ls", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_setcmdpos()