Use image pointer size for profile info

May fix some random crashes in dex2oat due to cross compilation.

Change-Id: I633652500e8c7dfec38044dffd07eb467973d82a
diff --git a/runtime/gc/collector/concurrent_copying.cc b/runtime/gc/collector/concurrent_copying.cc
index 4cbcdc5..399591b 100644
--- a/runtime/gc/collector/concurrent_copying.cc
+++ b/runtime/gc/collector/concurrent_copying.cc
@@ -1472,7 +1472,7 @@
         ArtMethod* method = gc_root_source->GetArtMethod();
         LOG(INTERNAL_FATAL) << "gc root in method " << method << " " << PrettyMethod(method);
         RootPrinter root_printer;
-        method->VisitRoots(root_printer);
+        method->VisitRoots(root_printer, sizeof(void*));
       }
       ref->GetLockWord(false).Dump(LOG(INTERNAL_FATAL));
       region_space_->DumpNonFreeRegions(LOG(INTERNAL_FATAL));