Fix a bug in ClassTableGet code generation for IMTs.

Introduced by:
  https://android-review.googlesource.com/#/c/244980/

test:566-polymorphic-inling for fixing x86 crash. Also
fixes a performance regression.
bug:29188168

Change-Id: Id90cb819c88e7ba3db1cb3c50c517a112ab7d784
diff --git a/test/566-polymorphic-inlining/polymorphic_inline.cc b/test/566-polymorphic-inlining/polymorphic_inline.cc
index c0d93dd..9f4c6c9 100644
--- a/test/566-polymorphic-inlining/polymorphic_inline.cc
+++ b/test/566-polymorphic-inlining/polymorphic_inline.cc
@@ -81,6 +81,7 @@
 
   do_checks(cls, "testInvokeVirtual");
   do_checks(cls, "testInvokeInterface");
+  do_checks(cls, "testInvokeInterface2");
   do_checks(cls, "$noinline$testInlineToSameTarget");
 }