Bug 328412 - Find in empty document triggers "ASSERTION: No first node!"; r=bzbarsky sr=jst

embedding/components/find/src/nsFind.cpp

@@ -301,6 +301,9 @@ nsFindContentIterator::Reset()
   range->SetStart(mStartNode, mStartOffset);
   range->SetEnd(mEndNode, mEndOffset);
   mOuterIterator->Init(range);
+  // if there's nothing to search, just return
+  if (mOuterIterator->IsDone())
+    return;
 
   if (!mFindBackward) {
     if (mStartOuterNode != mStartNode) {