build: disable jemalloc (#99)

librocksdb_sys/build.sh

@@ -135,7 +135,7 @@ function compile_rocksdb() {
     cd rocksdb
     export EXTRA_CFLAGS="-fPIC -I${wd}/zlib-1.2.11 -I${wd}/bzip2-1.0.6 -I${wd}/snappy-1.1.1 -I${wd}/lz4-r131/lib -I${wd}/zstd-1.2.0/lib"
     export EXTRA_CXXFLAGS="-DZLIB -DBZIP2 -DSNAPPY -DLZ4 -DZSTD $EXTRA_CFLAGS"
-    make static_lib -j $con
+    DISABLE_JEMALLOC=1 make static_lib -j $con
     mv librocksdb.a ../
     cd ..
 }