Don't use errno after sscanf am: 8e9853d664

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

Change-Id: I2d58b82a6a93cdff976b577b1c047c3c05d4f7f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>