Merge "Preventing zombie process creation." into pi-dev

        // Read from the pipe concurrently to avoid blocking the child.

        FdBuffer buffer;

        err = buffer.readFully(dumpPipe.readFd().get());

        // Wait on the child to avoid it becoming a zombie process.

        status_t cStatus = wait_child(child);

        if (err != NO_ERROR) {

            ALOGW("TombstoneSection '%s' failed to read stack dump: %d", this->name.string(), err);

            dumpPipe.readFd().reset();

            break;

        }

        if (cStatus != NO_ERROR) {

            ALOGE("TombstoneSection '%s' child had an issue: %s\n", this->name.string(), strerror(-cStatus));

        }

        auto dump = std::make_unique<char[]>(buffer.size());

        auto iterator = buffer.data();