fix: kora工具检视问题修复

【背景】kora工具检视问题修复

【修改方案】
1，对部分代码问题进行整改

【影响】
对现有的产品编译不会有影响。

Signed-off-by: wangchen <wangchen64@huawei.com>
Change-Id: Iafc58b7c71e5d139e11a0ae9d98ca5a57fc6549f

testsuites/unittest/extended/ipc/ipc_test.cpp

@@ -40,30 +40,4 @@ public:
     static void SetUpTestCase(void) {}
     static void TearDownTestCase(void) {}
 };
-
-#if defined(LOSCFG_USER_TEST_FULL)
-/* *
- * @tc.name: IPC_TEST_MKFIFOAT_001
- * @tc.desc: function for IoTest:mkfifoat-normal test
- * @tc.type: FUNC
- */
-#if 0
-HWTEST_F(IoTest, IPC_TEST_MKFIFOAT_001, TestSize.Level0)
-{
-    IPC_TEST_MKFIFOAT_001();
-}
-#endif
-
-/* *
- * @tc.name: IPC_TEST_MKFIFOAT_002
- * @tc.desc: function for IoTest:mkfifoat-innormal test
- * @tc.type: FUNC
- */
-#if 0
-HWTEST_F(IoTest, IPC_TEST_MKFIFOAT_002, TestSize.Level0)
-{
-    IPC_TEST_MKFIFOAT_002();
-}
-#endif
-#endif
 } // namespace OHOS

testsuites/unittest/extended/signal/smoke/mkfifo_test_001.cpp

@@ -56,11 +56,17 @@ static int TestMkfifo()
         return -1;
     } else if (pid == 0) {
         fd = open("/dev/fifo", O_WRONLY);
+        if (fd < 0) {
+            return -1;
+        }
         write(fd, sentence, sizeof(sentence) + 1);
         close(fd);
         exit(0);
     } else {
         fd = open("/dev/fifo", O_RDONLY);
+        if (fd < 0) {
+            return -1;
+        }
         read(fd, buffer, sizeof(buffer));
         printf("Receive data: %s\n", buffer);
         close(fd);