fix parse meminfo error am: bcdc459ae0 am: 3f7551d2d8 am: 3d1d0e50d5 am: 2a161938b7 am: c236a3cfd3 am: 4956669999

Original change: https://android-review.googlesource.com/c/platform/test/vts-testcase/kernel/+/1417969

Change-Id: I045d21d9b3cf02640ac5488c77622ff03d6fd0c3