fix error output of lanelet_map_loader

/label bug

Fixed bug

lanelet_map_loader does not output full error message from parser

Required information:

• Operating system and version:
  • Ubuntu 16.04
• Autoware installation type:
  • from source
• Autoware version or commit hash
  • master
• ROS distribution and version:
  • ROS Kinetic
• ROS installation type:
  • from binaries
• Package or library, if applicable:
  • map_file package

Description of the bug

lanelet_map_loader shuts down without outputting full error message.

Steps to reproduce the bug

1. prepare invalid lanelet map autoware_invalid_map.osm
2. load the map by roslaunch map_file lanelet2_map_loader.launch file_name:=/path/to/invalid_map.osm

Expected behavior

lanelet_map_loader terminates after outputting all error messages as follows:

[ERROR] [1573642640.229832623]: Errors ocurred while parsing Lanelet Map:
[ERROR] [1573642640.229877002]: 	- Error parsing primitive -9395: Creating a regulatory element of type invalid_regulatory_element failed: No regulatory element found that implements rule invalid_regulatory_element
[ERROR] [1573642640.229901396]: 	- Error parsing primitive 45008: Failed to get id -9395 from map

Actual behavior

lanelet_map_loader only outputs part of error message as follows:

[ERROR] [1573640720.247154961]: Errors ocurred while parsing Lanelet Map:

Fix applied

The bug comes from the fact that return EXIT_FAILURE is called within the loop. It should be called after the loop is finished.