patch 8.2.4055: Vim9: line break in expression causes v:errmsg to be fillec

Problem:    Vim9: line break in expression causes v:errmsg to be filled.
            (Yegappan Lakshmanan)
Solution:   Do not give an error when skipping over an expression.

src/testdir/test_vim9_expr.vim

@@ -3147,6 +3147,22 @@ def Test_expr7_method_call()
   CheckDefExecFailure(lines, 'E1013:')
 enddef
 
+def Test_expr7_method_call_linebreak()
+  # this was giving an error when skipping over the expression
+  var lines =<< trim END
+      vim9script
+      def Test()
+        var a: dict<any> = {b: {}}
+        a.b->extend({f1: 1,
+                         f2: 2})
+        echo a
+      enddef
+      defcompile
+      assert_equal('', v:errmsg)
+  END
+  CheckScriptSuccess(lines)
+enddef
+
 
 def Test_expr7_not()
   var lines =<< trim END

src/userfunc.c

@@ -1703,6 +1703,8 @@ get_func_tv(
     typval_T	argvars[MAX_FUNC_ARGS + 1];	// vars for arguments
     int		argcount = 0;		// number of arguments found
     int		vim9script = in_vim9script();
+    int		evaluate = evalarg == NULL
+			       ? FALSE : (evalarg->eval_flags & EVAL_EVALUATE);
 
     /*
      * Get the arguments.
@@ -1728,7 +1730,9 @@ get_func_tv(
 	{
 	    if (*argp != ',' && *skipwhite(argp) == ',')
 	    {
-		semsg(_(e_no_white_space_allowed_before_str_str), ",", argp);
+		if (evaluate)
+		    semsg(_(e_no_white_space_allowed_before_str_str),
+								    ",", argp);
 		ret = FAIL;
 		break;
 	    }
@@ -1739,7 +1743,8 @@ get_func_tv(
 	    break;
 	if (vim9script && !IS_WHITE_OR_NUL(argp[1]))
 	{
-	    semsg(_(e_white_space_required_after_str_str), ",", argp);
+	    if (evaluate)
+		semsg(_(e_white_space_required_after_str_str), ",", argp);
 	    ret = FAIL;
 	    break;
 	}
@@ -1778,7 +1783,7 @@ get_func_tv(
 
 	funcargs.ga_len -= i;
     }
-    else if (!aborting())
+    else if (!aborting() && evaluate)
     {
 	if (argcount == MAX_FUNC_ARGS)
 	    emsg_funcname(e_too_many_arguments_for_function_str_2, name);

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4055,
 /**/
     4054,
 /**/