Can't use if up_disable_irq if there is not interrupt controller

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1174 42af7a65-404d-4744-a932-0658087f49c3

sched/irq_attach.c

@@ -91,7 +91,9 @@ int irq_attach(int irq, xcpt_t isr)
       state = irqsave();
       if (isr == NULL)
         {
+#ifndef CONFIG_ARCH_NOINTC
            up_disable_irq(irq);
+#endif
            isr = irq_unexpected_isr;
         }