fc_strrep_resize() should use SIZE_T_PRINTF
fc_strrep_resize() has: fc_assert_ret_val_msg(... ": %lu." ... (long unsigned int)*len)
Should just use SIZE_T_PRINTF.
While SIZE_T_PRINTF is available in S3_1 & master only, there's a typofix part on this patch that is applicable to S3_0.
fc_strrep_resize() has: fc_assert_ret_val_msg(... ": %lu." ... (long unsigned int)*len)
Should just use SIZE_T_PRINTF.