fix parse meminfo error am: 278ac87b88 am: 9a53ada9d7 am: 6117c24f29 am: b6579a567e am: 99b0143abe am: b92e1bdb70

Original change: https://android-review.googlesource.com/c/platform/test/vts-testcase/kernel/+/1419908

Change-Id: I782e2194d226d83dce8ae254161a84dcf9e98309