### Godot version

4.0 beta17

### System information

Windows10

### Issue description

call `"".split()`
Is there an infinite loop inside? Function does not return.

### Steps to reproduce

"".split()

### Minimal reproduction project

N/A
args.push_back(5);
	output = format.sprintf(args, &error);
	REQUIRE(error == false);
	CHECK(output == String("fish 5 frog"));
	
	format = "fish %05d frog";
	args.clear();
	args.push_back(5);
	output = format.sprintf(args, &error);
	REQUIRE(error == false);
	CHECK(output == String("fish 00005 frog"));
	
	format = "fish %5d frog";
	args.clear();
	args.push_back(5);
	output = format.sprintf(args, &error);
	REQUIRE(error == false);
	CHECK(output == String("fish     5 frog"));
	
	format = "fish %-5d frog";
	args.clear();
	args.push_back(5);
	output = format.sprintf(args, &error);
	REQUIRE(error == false);
	CHECK(output == String("fish 5     frog"));
	
	format = "fish %+d frog";
	args.clear();
	args.push_back(5);
	output = format.sprintf(args, &error);