Fixed spinLockIsrTake interrupt register save bug.

target/src/spinLockLib.c

@@ -56,15 +56,15 @@ void spinLockIsrGive (spinlockIsr_t * lock)
 
 void spinLockIsrTake (spinlockIsr_t * lock)
 {
-    INTREG *key;
+    INTREG  intreg;
 
     if (lock) {
-        key = (INTREG *)&(lock->lock.SL_pvReserved);
 #if SPIN_LOCK_USE_QUICK_LOCK > 0
-        API_SpinLockQuick(&lock->lock, key);
+        API_SpinLockQuick(&lock->lock, &intreg);
 #else
-        API_SpinLockIrq(&lock->lock, key);
+        API_SpinLockIrq(&lock->lock, &intreg);
 #endif
+        *(INTREG *)&(lock->lock.SL_pvReserved) = intreg;
     }
 }