Merge "Clarify dlfcn.dladdr_libc slightly." am: e393d48bc7

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2548970

Change-Id: I173203d54609540c1016f477f5aa47f295190a25
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>