Fix more gcc format warnings:

block/block_compact.c:193:119: error: format specifies type 'uintmax_t' (aka 'unsigned long') but the argument has type 'long long' [-Werror,-Wformat]
block/block_compact.c:202:124: error: format specifies type 'intmax_t' (aka 'long') but the argument has type 'long long' [-Werror,-Wformat]