ART: Temporarily use global references for GetLoadedClasses

Until we have enough local references, use global references.

Bug: 31684578
Bug: 32125344
Test: m test-art-host
Change-Id: If95ecaf424cfc7e8a84c7f99b071ac5d6bfb7797
diff --git a/test/907-get-loaded-classes/get_loaded_classes.cc b/test/907-get-loaded-classes/get_loaded_classes.cc
index c0f7082..e752bcb 100644
--- a/test/907-get-loaded-classes/get_loaded_classes.cc
+++ b/test/907-get-loaded-classes/get_loaded_classes.cc
@@ -70,7 +70,7 @@
   // 1) Free the local references.
   // 2) Deallocate.
   for (size_t i = 0; i < static_cast<size_t>(count); ++i) {
-    env->DeleteLocalRef(classes[i]);
+    env->DeleteGlobalRef(classes[i]);
   }
   jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(classes));