parse.y: Fix locations of NODE_ARRAY of opt_call_args

* parse.y: Fix to only include a range of assocs
  (exclude ',' form range).

  e.g. The locations of the NODE_ARRAY is fixed:

  ```
  m1(str: "bar",)
  ```

  * Before

  ```
  NODE_ARRAY (line: 1, code_range: (1,3)-(1,14))
  ```

  * After

  ```
  NODE_ARRAY (line: 1, code_range: (1,3)-(1,13))
  ```

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61128 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

parse.y

@@ -2478,7 +2478,7 @@ opt_call_args	: none
 		| assocs ','
 		    {
 		    /*%%%*/
-			$$ = $1 ? new_list(new_hash($1, &@1), &@$) : 0;
+			$$ = $1 ? new_list(new_hash($1, &@1), &@1) : 0;
 		    /*%
 			$$ = arg_add_assocs(arg_new(), $1);
 		    %*/