Bug 459443. Make sure to detach our editor even if we don't have a session history entry, so that scripts will get correctly reenabled. r+sr=peterv

docshell/base/nsDocShell.cpp

@@ -5535,8 +5535,7 @@ nsDocShell::DetachEditorFromWindow(nsISHEntry *aSHEntry)
 void
 nsDocShell::DetachEditorFromWindow()
 {
-    if (mOSHE)
-        DetachEditorFromWindow(mOSHE);
+    DetachEditorFromWindow(mOSHE);
 }
 
 nsresult