Reset R0 after generateIPv6MdnsFilter() to avoid clobbering

This commit ensures the correct value of R0 is maintained in the IPv6
filter logic by resetting it to IPV6_NEXT_HEADER_OFFSET after the
generateIPv6MdnsFilter() call. This prevents unintended modification of
R0, which could disrupt subsequent operations.

Test: TH
Change-Id: I2c7bd65d539d157e01fcf4ff7c5ea31ca177da56
2 files changed