Fix crash when modifying a stylesheet through the DOM before the document is displayed.

git-svn-id: svn://10.0.0.236/trunk@67315 18797224-902f-48f8-a5cc-f745e15eee43
2000-04-26 23:22:06 +00:00
parent b443eb6d5e
commit 9b4ef67be1
2 changed files with 8 additions and 0 deletions
--- a/mozilla/layout/base/nsCSSFrameConstructor.cpp
+++ b/mozilla/layout/base/nsCSSFrameConstructor.cpp
@@ -9455,6 +9455,10 @@ nsCSSFrameConstructor::StyleRuleChanged(nsIPresContext* aPresContext,
  nsIFrame* frame;
  shell->GetRootFrame(&frame);

+  if (!frame) {
+    return NS_OK;
+  }
+
  PRBool reframe  = PR_FALSE;
  PRBool reflow   = PR_FALSE;
  PRBool render   = PR_FALSE;