Merge 92132

Source/WebCore/rendering/RenderBlockLineLayout.cpp

Index: Source/WebCore/rendering/RenderBlockLineLayout.cpp
===================================================================
--- Source/WebCore/rendering/RenderBlockLineLayout.cpp	(revision 93495)
+++ Source/WebCore/rendering/RenderBlockLineLayout.cpp	(working copy)
@@ -1838,7 +1838,7 @@
     if (lineMidpointState.numMidpoints % 2) {
         // Find the trailing space object's midpoint.
         int trailingSpaceMidpoint = lineMidpointState.numMidpoints - 1;
-        for ( ; trailingSpaceMidpoint >= 0 && lineMidpointState.midpoints[trailingSpaceMidpoint].m_obj != m_whitespace; --trailingSpaceMidpoint) { }
+        for ( ; trailingSpaceMidpoint > 0 && lineMidpointState.midpoints[trailingSpaceMidpoint].m_obj != m_whitespace; --trailingSpaceMidpoint) { }
         ASSERT(trailingSpaceMidpoint >= 0);
         if (collapseFirstSpace == CollapseFirstSpace)
             lineMidpointState.midpoints[trailingSpaceMidpoint].m_pos--;