Fix a throw returning to a frame marked for lazy deopt that captures the stacktrace.

runtime/vm/stub_code_dbc.cc

Index: runtime/vm/stub_code_dbc.cc
diff --git a/runtime/vm/stub_code_dbc.cc b/runtime/vm/stub_code_dbc.cc
index 66a46bdafb532927d5f1dc9e1cdfecfaf2678248..1f2d23e26c7bcce2600f9d0352b802ef3273ab2e 100644
--- a/runtime/vm/stub_code_dbc.cc
+++ b/runtime/vm/stub_code_dbc.cc
@@ -54,7 +54,12 @@ void StubCode::GenerateMegamorphicMissStub(Assembler* assembler) {
 // These deoptimization stubs are only used to populate stack frames
 // with something meaningful to make sure GC can scan the stack during
 // the last phase of deoptimization which materializes objects.
-void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) {
+void StubCode::GenerateDeoptimizeLazyFromReturnStub(Assembler* assembler) {
+  __ Trap();
+}
+
+
+void StubCode::GenerateDeoptimizeLazyFromThrowStub(Assembler* assembler) {
   __ Trap();
 }