fix for crasher nsbeta3++ bug 52818, r=dp, r/a=rpotts

netwerk/cache/filecache/nsNetDiskCache.cpp

@@ -431,6 +431,8 @@ nsNetDiskCache::GetCachedNetDataByID(PRInt32 RecordID, nsINetDataCacheRecord **_
     printf("CACHE: GetCachedNetDataByID(id=%d) created nsDiskCacheRecord %p\n", RecordID, *_retval);
 #endif /* DEBUG_dp */
     return rv;
+  } else if(!info) {
+    rv = NS_ERROR_FAILURE;
   }
 
 #ifdef DEBUG_dp

netwerk/cache/mgr/nsCachedNetData.cpp

@@ -1044,7 +1044,7 @@ nsCachedNetData::Delete(void)
         nsCOMPtr<nsINetDataCacheRecord> record;
 
         rv = GetRecord(getter_AddRefs(record));
-        if (NS_SUCCEEDED(rv))
+        if (NS_SUCCEEDED(rv) && record)
         {
             // Delete the record if we can get a record.
             record->Delete();