[11] RFR: Fix AArch64 build after merge

[Aleksey Shipilev]

Overlooked a little thing when doing the recent sh/jdk11 merge.

Trivial fix:

diff -r 5db068a1c73d src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp
--- a/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp	Thu Aug 15
13:27:31 2019 +0200
+++ b/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp	Thu Aug 15
13:28:43 2019 -0400
@@ -575,7 +575,7 @@
   __ push_call_clobbered_registers();

   __ mov(lr, CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier));
-  __ blrt(lr, 1, 0, MacroAssembler::ret_type_integral);
+  __ blr(lr);
   __ mov(rscratch1, r0);
   __ pop_call_clobbered_registers();
   __ mov(r0, rscratch1);


Testing: aarch64 build, hotspot_gc_shenandoah

-- 
Thanks,
-Aleksey