v5: fix implicit conversion changes signedness build error

The Android toolchain compiler reports the following error:

FAILED:
out/soong/.intermediates/hardware/google/apf/v5/libapf_v5/android_x86_64_silvermont_sdk_static/obj/hardware/google/apf/v5/apf_interpreter.o
hardware/google/apf/v5/apf_interpreter.c:771:85: error: implicit conversion changes signedness: 'u32' (aka 'unsigned int') to 's32' (aka
'int') [-Werror,-Wsign-conversion]
int dscp = calculate_checksum_and_return_dscp(allocated_buffer, pkt_len);

Test: TH
Change-Id: Ica95023345d38c2e6501409ec1183f12bb131b0e
2 files changed