Adjust empty-directive-name error offset

src/compiler/parse/state/tag.ts

@@ -382,7 +382,7 @@ function read_attribute(parser: Parser, unique_names: Set<string>) {
 			parser.error({
 				code: 'empty-directive-name',
 				message: `${type} name cannot be empty`
-			}, start+colon_index);
+			}, start + colon_index + 1);
 		}
 
 		if (type === 'Binding' && directive_name !== 'this') {

test/parser/samples/error-empty-classname-binding/error.json

@@ -3,8 +3,8 @@
 	"message": "Class name cannot be empty",
 	"start": {
 		"line": 1,
-		"column": 9,
-		"character": 9
+		"column": 10,
+		"character": 10
 	},
-	"pos": 9
+	"pos": 10
 }

test/parser/samples/error-empty-directive-name/error.json

@@ -3,8 +3,8 @@
 	"message": "Action name cannot be empty",
 	"start": {
 		"line": 1,
-		"column": 7,
-		"character": 7
+		"column": 8,
+		"character": 8
 	},
-	"pos": 7
+	"pos": 8
 }