Fix a leak in dvmFreeVfyBasicBlocks

After free each items in array vdata->basicBlocks,
free vdata->basicBlocks itself.

Change-Id: I20050135588fc96268911b8ab690b04c8ad949bc
dvz: remove dead code.

dvz is never used.  Delete it.

Change-Id: If2b5ccbf6668a1044a0d57e09ce6d0c0923c6c76
DexDump: Leak in FieldMethodInfo.signature

Free pMethInfo->signature when filled by getMethodInfo.

Change-Id: Id278d732374daceb7b8b05be7f433af25eee0c27