Change invoke-object-init to /range form

The invoke-object-init instruction pretends to be a regular invoke
that only knows how to call Object.<init>.  As such it always takes
one argument, and if we use the /range version we can specify the
"this" register with 16 bits instead of only 4.

Bug 3486699

Change-Id: I9ee4700c6935beee1dcbaa583b57befd33641414
diff --git a/vm/compiler/Dataflow.c b/vm/compiler/Dataflow.c
index ca72a68..38f822c 100644
--- a/vm/compiler/Dataflow.c
+++ b/vm/compiler/Dataflow.c
@@ -750,7 +750,7 @@
     // EF OP_EXECUTE_INLINE_RANGE
     DF_FORMAT_3RC,
 
-    // F0 OP_INVOKE_OBJECT_INIT
+    // F0 OP_INVOKE_OBJECT_INIT_RANGE
     DF_NOP,
 
     // F1 OP_RETURN_VOID_BARRIER