Marco Trevisan authored Jan 27, 2020 and Bastien Nocera committed Feb 05, 2020

Given that finger_name is set by GOptionEntry, make sure it's always
using allocated memory.

../utils/enroll.c:38:28: error: initialization discards ‘const’ qualifier
  from pointer target type [-Werror=discarded-qualifiers]
38 | static char *finger_name = "right-index-finger";
   |                            ^~~~~~~~~~~~~~~~~~~~