Missing return value with some config options

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1164 42af7a65-404d-4744-a932-0658087f49c3

sched/sched_setupidlefiles.c

@@ -128,6 +128,8 @@ int sched_setupidlefiles(FAR _TCB *tcb)
 #else
   return OK;
 #endif /* CONFIG_NFILE_STREAMS */
+#else
+  return OK;
 #endif /* CONFIG_NFILE_DESCRIPTORS && CONFIG_DEV_CONSOLE */
 }