Fix branch destination in nterp_instance_of_slow_path.

We were wrongly jumping to the read barrier call. While this
doesn't have side effects on CC (besides performance),
it will break with userfaultfd GC.

Bug: 233230910
Test: m
Change-Id: Ibb653c5188c44a21ec0280b2b826978db5a91ddb
(cherry picked from commit 6fceb6630212504746fae5e4a13fb5b08885d066)
Merged-In: Ibb653c5188c44a21ec0280b2b826978db5a91ddb
2 files changed