Don't use errno after sscanf am: 8e9853d664 am: 89dce7d37a am: bee40bba27 am: be8d041806 am: a36da3bd16

Original change: https://android-review.googlesource.com/c/platform/system/libprocinfo/+/2548460

Change-Id: I66c610080dc21fdb6888850aa4405a0a6898aa7a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>