Check for previous-continuations intead of previous-in-flows. Bug 448610, r+sr=roc

layout/generic/nsFirstLetterFrame.cpp

@@ -236,8 +236,8 @@ nsFirstLetterFrame::Reflow(nsPresContext*          aPresContext,
     nsLineLayout* ll = aReflowState.mLineLayout;
     PRBool        pushedFrame;
 
-    NS_ASSERTION(ll->GetFirstLetterStyleOK() || GetPrevInFlow(),
-                 "First-in-flow first-letter should have first-letter style enabled in nsLineLayout!");
+    NS_ASSERTION(ll->GetFirstLetterStyleOK() || GetPrevContinuation(),
+                 "First-continuation first-letter should have first-letter style enabled in nsLineLayout!");
     ll->BeginSpan(this, &aReflowState, bp.left, availSize.width);
     ll->ReflowFrame(kid, aReflowStatus, &aMetrics, pushedFrame);
     ll->EndSpan(this);