Merge "bit: avoid calling strdup(NULL)" am: 589f3e4871 am: 96c1b4bd0e am: 5fdccc4578

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1995590

Change-Id: I0afc27ac42bd9c2a1d604a5f6915159bdcad9c99