$OpenBSD: patch-toolkit_xre_nsXREDirProvider_cpp,v 1.6 2012/02/20 20:21:43 landry Exp $
Look for extensions in LOCALBASE
--- toolkit/xre/nsXREDirProvider.cpp.orig	Wed Jan 11 18:15:08 2012
+++ toolkit/xre/nsXREDirProvider.cpp	Sat Jan 14 20:24:24 2012
@@ -1128,11 +1128,7 @@ nsXREDirProvider::GetSystemExtensionsDirectory(nsILoca
   NS_ENSURE_SUCCESS(rv, rv);
 #elif defined(XP_UNIX)
   static const char *const sysSExtDir = 
-#ifdef HAVE_USR_LIB64_DIR
-    "/usr/lib64/mozilla/extensions";
-#else
-    "/usr/lib/mozilla/extensions";
-#endif
+    "${LOCALBASE}/lib/mozilla/extensions";
 
   rv = NS_NewNativeLocalFile(nsDependentCString(sysSExtDir), false,
                              getter_AddRefs(localDir));