fixed a compiling error if RT_DEBUG is defined but RT_DEBUG_CONTEXT_CHECK is defined as 0

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2270 bbd45198-f89e-11dd-88c7-29a3b14d5316

include/rtdebug.h

@@ -73,7 +73,10 @@
             rt_kprintf("Function[%s] shall not used in ISR\n", __FUNCTION__);\
             RT_ASSERT(0)}\
         rt_hw_interrupt_enable(level);} while (0)
+#else
+#define RT_DEBUG_NOT_IN_INTERRUPT
 #endif
+
 #else /* RT_DEBUG */
 
 #define RT_ASSERT(EX)