[vm, arm64] Fix CallPattern assertion.

TEST=vm/cc/Call
Bug: https://github.com/dart-lang/sdk/issues/44623
Change-Id: I22197a345a7971353f59856efed5aa45af7d22ca
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/181061
Reviewed-by: Liam Appelbe <liama@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>

runtime/vm/instructions_arm64.cc

@@ -20,8 +20,8 @@ CallPattern::CallPattern(uword pc, const Code& code)
     : object_pool_(ObjectPool::Handle(code.GetObjectPool())),
       target_code_pool_index_(-1) {
   ASSERT(code.ContainsInstructionAt(pc));
-  // Last instruction: blr ip0.
-  ASSERT(*(reinterpret_cast<uint32_t*>(pc) - 1) == 0xd63f0200);
+  // Last instruction: blr lr.
+  ASSERT(*(reinterpret_cast<uint32_t*>(pc) - 1) == 0xd63f03c0);
 
   Register reg;
   InstructionPattern::DecodeLoadWordFromPool(pc - 2 * Instr::kInstrSize, &reg,