solve_l1r_l2_svc() uninitialized variable

[simsong]

From @myeung2 on January 24, 2017 20:3

Hi, thanks for a great tool. With regard to this compilation warning:

linear.cpp: In function `void train_one(const problem*, const parameter*, double*, double, double)':
linear.cpp:1365: warning: 'loss_old' might be used uninitialized in this function

Can I just initialize "loss_old" to 0? Thanks.

Copied from original issue: cjlin1#31