Fix an issue with position.

Test-tag: test_dfuse_caching_check

Signed-off-by: Ashley Pittman <ashley.m.pittman@intel.com>

src/client/dfuse/ops/read.c

@@ -314,7 +314,7 @@ chunk_read(fuse_req_t req, size_t len, off_t position, struct dfuse_obj_hdl *oh)
  bool submit = false;
  bool rcb = false;
 
- last = position = (position + (K128 - 1)) & -K128;
+ last = position + ((position + (K128 - 1)) & -K128);
 
  if (len != K128)
  return false;