$OpenBSD: patch-toolkit_xre_nsXREDirProvider_cpp,v 1.12 2012/06/11 15:29:56 landry Exp $
Look for extensions in LOCALBASE
--- toolkit/xre/nsXREDirProvider.cpp.orig	Wed May  2 05:17:15 2012
+++ toolkit/xre/nsXREDirProvider.cpp	Wed May  9 23:06:35 2012
@@ -1168,11 +1168,7 @@ 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));
