Proactive Flushes - Compilation warnings

[Yuval-Ariel]

compiling on mac:

db/db_impl/db_impl_compaction_flush.cc:4010:37: warning: format specifies type 'unsigned long' but the argument has type 'rocksdb::SequenceNumber' (aka 'unsigned long long') [-Wformat]
min_size_to_flush, seq_num_for_cf_picked,
^~~~~~~~~~~~~~~~~~~~~
./logging/logging.h:39:63: note: expanded from macro 'ROCKS_LOG_INFO'
RocksLogShorterFileName(FILE), ##VA_ARGS)
^~~~~~~~~~~
db/db_impl/db_impl_compaction_flush.cc:4011:18: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t' (aka 'unsigned long long') [-Wformat]
cfd_to_flush->GetNumQueuedForFlush(),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./logging/logging.h:39:63: note: expanded from macro 'ROCKS_LOG_INFO'
RocksLogShorterFileName(FILE), ##VA_ARGS)
^~~~~~~~~~~
db/db_impl/db_impl_compaction_flush.cc:4013:18: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t' (aka 'unsigned long long') [-Wformat]
orig_cfd_to_flush->GetNumQueuedForFlush());
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./logging/logging.h:39:63: note: expanded from macro 'ROCKS_LOG_INFO'
RocksLogShorterFileName(FILE), ##VA_ARGS)
^~~~~~~~~~~