T1_GetKerning    4225 ext/gd/gd.c    			amount_kern = (int) T1_GetKerning(*f_ind, str[i - 1], str[i]);
T1_GetKerning    4321 ext/gd/gd.c    			amount_kern = i ? T1_GetKerning(*f_ind, str[i - 1], str[i]) : 0;