MethodHandles: Temporarily rewrite test of exact invokes.

Go through an additional layer of indirection to fool the overly
smart type inference.

The issue needs to be investigated on the Jack side, as per
the associated bug.

Test: make test-art-host
Bug: 32536744

Change-Id: Ic02bf155822e76332eaa7a300ba9c0da8e751e26
diff --git a/test/957-methodhandle-transforms/src/Main.java b/test/957-methodhandle-transforms/src/Main.java
index aaf6e2f..e9d313b 100644
--- a/test/957-methodhandle-transforms/src/Main.java
+++ b/test/957-methodhandle-transforms/src/Main.java
@@ -99,8 +99,16 @@
     DelegatingTransformer delegate = new DelegatingTransformer(specialFunctionHandle);
 
     // Test an exact invoke.
+    //
+    // Note that the shorter form below doesn't work and must be
+    // investigated on the jack side :  b/32536744
+    //
+    // delegate.invokeExact(false, 'h', (short) 56, 72, Integer.MAX_VALUE + 42l,
+    //    0.56f, 100.0d, "hello", (Object) "goodbye");
+
+    Object obj = "goodbye";
     delegate.invokeExact(false, 'h', (short) 56, 72, Integer.MAX_VALUE + 42l,
-        0.56f, 100.0d, "hello", "goodbye");
+        0.56f, 100.0d, "hello", obj);
 
     // Test a non exact invoke with one int -> long conversion and a float -> double
     // conversion.