Don't use rowIndex() if needsCellRecalc().

Source/core/rendering/RenderTableSection.cpp

Index: Source/core/rendering/RenderTableSection.cpp
diff --git a/Source/core/rendering/RenderTableSection.cpp b/Source/core/rendering/RenderTableSection.cpp
index b22590b2716841cbb345a58e26e5a74d8dbb4ffc..e9bf46451b7d2b1ac206177bee328e8afbc62595 100644
--- a/Source/core/rendering/RenderTableSection.cpp
+++ b/Source/core/rendering/RenderTableSection.cpp
@@ -1571,11 +1571,12 @@ void RenderTableSection::recalcCells()
 }
 
 // FIXME: This function could be made O(1) in certain cases (like for the non-most-constrainive cells' case).
-void RenderTableSection::rowLogicalHeightChanged(unsigned rowIndex)
+void RenderTableSection::rowLogicalHeightChanged(RenderTableRow* row)
 {
     if (needsCellRecalc())
         return;
 
+    unsigned rowIndex = row->rowIndex();
     setRowLogicalHeightToRowStyleLogicalHeight(m_grid[rowIndex]);
 
     for (RenderTableCell* cell = m_grid[rowIndex].rowRenderer->firstCell(); cell; cell = cell->nextCell())