libcgc: Only output third operand if possibly needed
libcgc: Only output third operand if possibly needed

Signed-off-by: Erik Faye-Lund <2a8ffc07e8f57d80a2934ccc3dd1949354d82b2d@gmail.com>

digetx/grate,grate-driver/grate,grate-driver/grate,digetx/grate