Do not zero-initialize RawPtr.

Source/modules/webdatabase/DatabaseServer.cpp

Index: Source/modules/webdatabase/DatabaseServer.cpp
diff --git a/Source/modules/webdatabase/DatabaseServer.cpp b/Source/modules/webdatabase/DatabaseServer.cpp
index d2856c048569b3af4d40809d4292263b7de3aaed..71761dbc9fc15cba3d938ae5bd51f9fa8dc3dbf7 100644
--- a/Source/modules/webdatabase/DatabaseServer.cpp
+++ b/Source/modules/webdatabase/DatabaseServer.cpp
@@ -54,7 +54,7 @@ PassRefPtrWillBeRawPtr<DatabaseBackendBase> DatabaseServer::openDatabase(RefPtr<
     DatabaseType type, const String& name, const String& expectedVersion, const String& displayName,
     unsigned long estimatedSize, bool setVersionInNewDatabase, DatabaseError &error, String& errorMessage)
 {
-    RefPtrWillBeRawPtr<DatabaseBackendBase> database;
+    RefPtrWillBeRawPtr<DatabaseBackendBase> database = nullptr;
     if (DatabaseTracker::tracker().canEstablishDatabase(backendContext.get(), name, displayName, estimatedSize, error))
         database = createDatabase(backendContext, type, name, expectedVersion, displayName, estimatedSize, setVersionInNewDatabase, error, errorMessage);
     return database.release();
@@ -64,7 +64,7 @@ PassRefPtrWillBeRawPtr<DatabaseBackendBase> DatabaseServer::createDatabase(RefPt
     DatabaseType type, const String& name, const String& expectedVersion, const String& displayName,
     unsigned long estimatedSize, bool setVersionInNewDatabase, DatabaseError& error, String& errorMessage)
 {
-    RefPtrWillBeRawPtr<DatabaseBackendBase> database;
+    RefPtrWillBeRawPtr<DatabaseBackendBase> database = nullptr;
     switch (type) {
     case DatabaseType::Async:
         database = adoptRefWillBeNoop(new Database(backendContext, name, expectedVersion, displayName, estimatedSize));