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/libc/util/smoke/util_test_003.cpp

@@ -48,6 +48,9 @@ static UINT32 TestCase(VOID)
         NULL
     };
     CHAR *buf = (char *)malloc(TEST_BUF_SIZE);
+    if (buf == NULL) {
+        return -1;
+    }
     CHAR *a = TEST_STR;
     CHAR *value = NULL;
     CHAR *subopts = NULL;

testsuites/unittest/libc/util/smoke/util_test_007.cpp

@@ -87,11 +87,13 @@ static UINT32 TestCase(VOID)
         ptr = (int *)Xmalloc(sizeof(int));
         *ptr = rand() & 0xff;
         val = tsearch((void *)ptr, &g_root, Compare);
-        if (val == NULL)
+        if (val == NULL) {
             exit(EXIT_FAILURE);
-        else if ((*(int **)val) != ptr)
+        } else if ((*(int **)val) != ptr) {
             free(ptr);
+        }
     }
+
     twalk(g_root, Action);
     tdestroy(g_root, free);