8264358: Don't create invalid oop in method handle tracing

Reviewed-by: neliasso, thartmann

Author: stefank

src/hotspot/cpu/aarch64/methodHandles_aarch64.cpp

@@ -444,7 +444,7 @@ void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
 
 #ifndef PRODUCT
 void trace_method_handle_stub(const char* adaptername,
-                              oop mh,
+                              oopDesc* mh,
                               intptr_t* saved_regs,
                               intptr_t* entry_sp) {  }
 

src/hotspot/cpu/x86/methodHandles_x86.cpp

@@ -503,7 +503,7 @@ void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
 
 #ifndef PRODUCT
 void trace_method_handle_stub(const char* adaptername,
-                              oop mh,
+                              oopDesc* mh,
                               intptr_t* saved_regs,
                               intptr_t* entry_sp) {
   // called as a leaf from native code: do not block the JVM!