fix build

librocksdb-sys/api/c.cc

@@ -1,3 +1,4 @@
+#include "../rocksdb/db/c.cc"
 #include "../rocksdb/include/rocksdb/version.h"
 #include <cstring>
 #include "c.h"

librocksdb-sys/rocksdb_lib_sources.txt

@@ -26,7 +26,6 @@ db/blob/blob_log_writer.cc
 db/blob/blob_source.cc
 db/blob/prefetch_buffer_collection.cc
 db/builder.cc
-db/c.cc
 db/column_family.cc
 db/compaction/compaction.cc
 db/compaction/compaction_iterator.cc