message: cmake: set DEBUG define correctly
diff: @@ -4,6 +4,8 @@ project(dronelink)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -Weffc++ -Werror")
  +set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG")
  +
  add_library(dronelink STATIC
  src/connection.cpp
  src/device.cpp
  