Bug 439204: Remove assertion "We placed a float where there was no room!" r=roc

layout/generic/crashtests/crashtests.list

@@ -105,7 +105,7 @@ load 375831.html
 load 376419.html
 load 377522.html
 load 379217-1.xhtml
-asserts(1-2) load 379217-2.xhtml # Bug 439204
+load 379217-2.xhtml
 load 379917-1.xhtml
 load 380012-1.html
 load 381152-1.html

layout/generic/nsLineLayout.cpp

@@ -323,8 +323,6 @@ nsLineLayout::UpdateBand(const nsRect& aNewAvailSpace,
   for (PerSpanData* psd = mCurrentSpan; psd; psd = psd->mParent) {
     psd->mRightEdge += deltaWidth;
     psd->mContainsFloat = true;
-    NS_ASSERTION(psd->mX - mTrimmableWidth <= psd->mRightEdge,
-                 "We placed a float where there was no room!");
 #ifdef NOISY_REFLOW
     printf("  span %p: oldRightEdge=%d newRightEdge=%d\n",
            psd, psd->mRightEdge - deltaRightEdge, psd->mRightEdge);