### Godot version

v4.0.3.stable.official [5222a99f5]
Master [6101240231600c871f5c5473872532c68ea3268c] (confirmed by https://github.com/godotengine/godot/issues/77666#issuecomment-1568952502)

### System information

Window 10

### Issue description

References are not unreferenced at the end of `if` scopes.

### Steps to reproduce

Copy, paste and run the snippet below, check the results:

```gdscript
extends Node


func _ready() -> void:
  var ref := RefCounted.new()
  var ref_count : int

  # OK
  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)

  # OK
  if true:
    var temp := ref
    temp = null

  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)

  # FAIL
  if true:
    var temp := ref

  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)
```

Output example:

```
Expected: 1, Result: 1
Expected: 1, Result: 1
Expected: 1, Result: 2
```

### Minimal reproduction project

N/A
}
			if (current_suite->has_local(pattern->bind->name)) {
				push_error(vformat(R"(There's already a %s named "%s" in this scope.)", current_suite->get_local(pattern->bind->name).get_name(), pattern->bind->name));
				complete_extents(pattern);
				return nullptr;
			}
			root_pattern->binds[pattern->bind->name] = pattern->bind;
		} break;
		case GDScriptTokenizer::Token::UNDERSCORE:
			
			advance();
			pattern->pattern_type = PatternNode::PT_WILDCARD;
			break;
		case GDScriptTokenizer::Token::PERIOD_PERIOD:
			
			advance();
			pattern->pattern_type = PatternNode::PT_REST;
			break;
		case GDScriptTokenizer::Token::BRACKET_OPEN: {
			
			advance();
			pattern->pattern_type = PatternNode::PT_ARRAY;
			if (!check(GDScriptTokenizer::Token::BRACKET_CLOSE)) {
				do {
					PatternNode *sub_pattern = parse_match_pattern(p_root_pattern != nullptr ? p_root_pattern : pattern);
					if (sub_pattern == nullptr) {
						continue;
					}
					if (pattern->rest_used) {
						push_error(R"(The ".." pattern must be the last element in the pattern array.)");