ART: Add debug code to test 913

To find a flaky environment, dump the stack under error condition.

Bug: 31385354
Test: m test-art-host-run-test-913-heaps
Change-Id: Idfb2248e4ae8eda8bbcc221c5533d97ca737da2c
diff --git a/test/913-heaps/run b/test/913-heaps/run
index c6e62ae..dd35526 100755
--- a/test/913-heaps/run
+++ b/test/913-heaps/run
@@ -14,4 +14,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-./default-run "$@" --jvmti
+./default-run "$@" --jvmti -Xcompiler-option -g