diff --git a/mozilla/layout/generic/nsBlockFrame.cpp b/mozilla/layout/generic/nsBlockFrame.cpp
index 519d7779d18..eb8e9741b86 100644
--- a/mozilla/layout/generic/nsBlockFrame.cpp
+++ b/mozilla/layout/generic/nsBlockFrame.cpp
@@ -5588,14 +5588,14 @@ nsBlockFrame::StealFrame(nsPresContext* aPresContext,
           if (searchingOverflowList) {
             // Erase line, but avoid making the overflow line list empty
             nsLineList* lineList = RemoveOverflowLines();
-            lineList->erase(line);
+            line = lineList->erase(line);
             if (!lineList->empty()) {
               nsresult rv = SetOverflowLines(lineList);
               NS_ENSURE_SUCCESS(rv, rv);
             }
           }
           else {
-            mLines.erase(line);
+            line = mLines.erase(line);
           }
           lineBox->Destroy(aPresContext->PresShell());
           if (line != line_end) {