fix failed testcast

Signed-off-by: Nlimeng <limeng151@huawei.com>
Change-Id: Ib811fb366558eca1a738cb55b8e9bb2423bbc1c5

kernel_lite/futex_posix/src/PthreadMutexTest.cpp

@@ -480,7 +480,7 @@ HWTEST_F(FutexTest, testPthreadMattrTypeRecursive5, Function | MediumTest | Leve
     }
     LOG("> parent pid = %d", getpid());
     Msleep(50);
-    AssertProcExitedOK(pid);
+    WaitProcExitedOK(pid);
 }
 
 /********************************************* Test case dividing line ***********************************************/