diff --git a/mozilla/layout/css/layout/src/nsCSSBlockFrame.cpp b/mozilla/layout/css/layout/src/nsCSSBlockFrame.cpp
index 1934b2d9f7b..7baedecf092 100644
--- a/mozilla/layout/css/layout/src/nsCSSBlockFrame.cpp
+++ b/mozilla/layout/css/layout/src/nsCSSBlockFrame.cpp
@@ -556,8 +556,7 @@ nsCSSBlockReflowState::nsCSSBlockReflowState(nsIPresContext* aPresContext,
                                              nsIStyleContext* aBlockSC,
                                              const nsReflowState& aReflowState,
                                              PRBool aComputeMaxElementSize)
-  : nsReflowState(aBlock, *aReflowState.parentReflowState,
-                  aReflowState.maxSize),
+  : nsReflowState(aReflowState),
     mLineLayout(aPresContext, aSpaceManager),
     mInlineLayout(mLineLayout, aBlock, aBlockSC)
 {
diff --git a/mozilla/layout/css/layout/src/nsCSSInlineFrame.cpp b/mozilla/layout/css/layout/src/nsCSSInlineFrame.cpp
index 9c34a0cda3f..d7571b5989f 100644
--- a/mozilla/layout/css/layout/src/nsCSSInlineFrame.cpp
+++ b/mozilla/layout/css/layout/src/nsCSSInlineFrame.cpp
@@ -43,7 +43,7 @@ nsCSSInlineReflowState::nsCSSInlineReflowState(nsCSSLineLayout& aLineLayout,
                                                nsIStyleContext* aInlineSC,
                                                const nsReflowState& aRS,
                                                PRBool aComputeMaxElementSize)
-  : nsReflowState(aInlineFrame, *aRS.parentReflowState, aRS.maxSize),
+  : nsReflowState(aRS),
     mInlineLayout(aLineLayout, aInlineFrame, aInlineSC)
 {
   // While we skip around the reflow state that our parent gave us so