Bug 1663924 - Use IDB_TRY in Maintenance::Run. r=dom-workers-and-storage-reviewers,ttung

Differential Revision: https://phabricator.services.mozilla.com/D93990

dom/indexedDB/ActorsParent.cpp

@@ -14155,53 +14155,53 @@ NS_IMETHODIMP
 Maintenance::Run() {
   MOZ_ASSERT(mState != State::Complete);
 
-  nsresult rv;
-
-  switch (mState) {
-    case State::Initial:
-      rv = Start();
-      break;
-
-    case State::CreateIndexedDatabaseManager:
-      rv = CreateIndexedDatabaseManager();
-      break;
-
-    case State::IndexedDatabaseManagerOpen:
-      rv = OpenDirectory();
-      break;
-
-    case State::DirectoryWorkOpen:
-      rv = DirectoryWork();
-      break;
-
-    case State::BeginDatabaseMaintenance:
-      rv = BeginDatabaseMaintenance();
-      break;
-
-    case State::Finishing:
-      Finish();
-      return NS_OK;
-
-    default:
-      MOZ_CRASH("Bad state!");
-  }
-
-  if (NS_WARN_IF(NS_FAILED(rv)) && mState != State::Finishing) {
+  const auto handleError = [this](const nsresult rv) {
+    if (mState != State::Finishing) {
       if (NS_SUCCEEDED(mResultCode)) {
         mResultCode = rv;
       }
 
-    // Must set mState before dispatching otherwise we will race with the owning
-    // thread.
+      // Must set mState before dispatching otherwise we will race with the
+      // owning thread.
       mState = State::Finishing;
 
       if (IsOnBackgroundThread()) {
         Finish();
       } else {
-      MOZ_ALWAYS_SUCCEEDS(
-          mQuotaClient->BackgroundThread()->Dispatch(this, NS_DISPATCH_NORMAL));
+        MOZ_ALWAYS_SUCCEEDS(mQuotaClient->BackgroundThread()->Dispatch(
+            this, NS_DISPATCH_NORMAL));
       }
     }
+  };
+
+  switch (mState) {
+    case State::Initial:
+      IDB_TRY(Start(), NS_OK, handleError);
+      break;
+
+    case State::CreateIndexedDatabaseManager:
+      IDB_TRY(CreateIndexedDatabaseManager(), NS_OK, handleError);
+      break;
+
+    case State::IndexedDatabaseManagerOpen:
+      IDB_TRY(OpenDirectory(), NS_OK, handleError);
+      break;
+
+    case State::DirectoryWorkOpen:
+      IDB_TRY(DirectoryWork(), NS_OK, handleError);
+      break;
+
+    case State::BeginDatabaseMaintenance:
+      IDB_TRY(BeginDatabaseMaintenance(), NS_OK, handleError);
+      break;
+
+    case State::Finishing:
+      Finish();
+      break;
+
+    default:
+      MOZ_CRASH("Bad state!");
+  }
 
   return NS_OK;
 }