Resource leak

The system resource will not be reclaimed and reused, reducing the future availability of the resource. Leak of memory or pointers to system resources
/bench/wtperf/wtperf_misc.c:152: RESOURCE_LEAK 138747 Assigning: "buf" = storage returned from "dmalloc(131072UL)".
/bench/wtperf/wtperf_misc.c:157: RESOURCE_LEAK 138747 Resource "buf" is not freed or pointed-to in "read".
/bench/wtperf/wtperf_misc.c:157: RESOURCE_LEAK 138747 Resource "buf" is not freed or pointed-to in "read".
/bench/wtperf/wtperf_misc.c:143: RESOURCE_LEAK 138747 Overwriting "buf" in "buf = dmalloc(len)" leaks the storage that "buf" points to.