Improve VM connection flow in Observatory

runtime/observatory/lib/src/repositories/isolate.dart

Index: runtime/observatory/lib/src/repositories/isolate.dart
diff --git a/runtime/observatory/lib/src/repositories/isolate.dart b/runtime/observatory/lib/src/repositories/isolate.dart
index 4c7712bb7e62f3d5557b211c7bc1c84ecbe8606a..35e77df3c2d4d92ec753fe437092f7294d3d5f9b 100644
--- a/runtime/observatory/lib/src/repositories/isolate.dart
+++ b/runtime/observatory/lib/src/repositories/isolate.dart
@@ -8,7 +8,11 @@ class IsolateRepository extends M.IsolateRepository {
   Future<M.Isolate> get(M.IsolateRef i) async{
     S.Isolate isolate = i as S.Isolate;
     assert(isolate != null);
-    await isolate.reload();
+    try {
+      await isolate.reload();
+    } on SC.NetworkRpcException catch (_) {
+      /* ignore */
+    }
     return isolate;
   }