bug to fixed; field use error

[zhangshuoneu]

octomap_mapping/octomap_server/src/octomap_server.cpp

Line 279 in 72141b9

color_free_.r = declare_parameter("color_free.a", 1.0);

color_free_.r = declare_parameter("color_free.a", 1.0);

to

color_free_.a = declare_parameter("color_free.a", 1.0);