fix parse meminfo error am: ec88a53897 am: 70e90c7271 am: bf6d525cea am: 138b89e648 am: 11201e7b07 am: 61606c5848 am: 9a5ce22eae am: 571eafd276 am: 224a68398b

Original change: https://android-review.googlesource.com/c/platform/test/vts-testcase/kernel/+/1467242

Change-Id: I9744a076fc48cd0ea296a953b8cf6757f2c30d49