Bug 567254 - Crash in Connection::getFilename for memory-based databases; r=sdwilsh

--HG--
extra : rebase_source : 9fb1300af8c6b35a4e1aa229af032cd08a76e721

storage/src/mozStorageConnection.cpp

@@ -599,8 +599,10 @@ Connection::internalClose()
 nsCString
 Connection::getFilename()
 {
-  nsCString leafname;
-  (void)mDatabaseFile->GetNativeLeafName(leafname);
+  nsCString leafname(":memory:");
+  if (mDatabaseFile) {
+    (void)mDatabaseFile->GetNativeLeafName(leafname);
+  }
   return leafname;
 }