fix: 修复一些静态检查工具发现的问题

Signed-off-by: Far <yesiyuan2@huawei.com>
Change-Id: I2b93259d55a9eb1a9dfd5887fd7821c15274bb7f

kernel/base/ipc/los_rwlock.c

@@ -96,7 +96,7 @@ UINT32 LOS_RwlockDestroy(LosRwlock *rwlock)
     return LOS_OK;
 }
 
-STATIC UINT32 OsRwlockCheck(LosRwlock *rwlock)
+STATIC UINT32 OsRwlockCheck(const LosRwlock *rwlock)
 {
     if (rwlock == NULL) {
         return LOS_EINVAL;

kernel/base/ipc/los_signal.c

@@ -78,7 +78,6 @@ STATIC VOID OsMoveTmpInfoToUnbInfo(sig_cb *sigcb, INT32 signo)
             /* delete tmpinfo from tmpList. */
             *prevHook = tmpInfoNode->next;
             (VOID)LOS_MemFree(m_aucSysMem0, tmpInfoNode);
-            tmpInfoNode = *prevHook;
             break;
         }
         prevHook = &tmpInfoNode->next;