fix compile warnning using cmake (#1132)

Author: dota17

src/test_lib_json/main.cpp

@@ -3309,15 +3309,15 @@ JSONTEST_FIXTURE_LOCAL(CharReaderAllowDropNullTest, issue178) {
       {__LINE__, R"({"a":,"b":true})", 2, objGetAnd("a", checkEq(nullValue))},
       {__LINE__, R"({"a":})", 1, objGetAnd("a", checkEq(nullValue))},
       {__LINE__, "[]", 0, checkEq(emptyArray)},
-      {__LINE__, "[null]", 1},
-      {__LINE__, "[,]", 2},
-      {__LINE__, "[,,,]", 4},
-      {__LINE__, "[null,]", 2},
-      {__LINE__, "[,null]", 2},
-      {__LINE__, "[,,]", 3},
-      {__LINE__, "[null,,]", 3},
-      {__LINE__, "[,null,]", 3},
-      {__LINE__, "[,,null]", 3},
+      {__LINE__, "[null]", 1, nullptr},
+      {__LINE__, "[,]", 2, nullptr},
+      {__LINE__, "[,,,]", 4, nullptr},
+      {__LINE__, "[null,]", 2, nullptr},
+      {__LINE__, "[,null]", 2, nullptr},
+      {__LINE__, "[,,]", 3, nullptr},
+      {__LINE__, "[null,,]", 3, nullptr},
+      {__LINE__, "[,null,]", 3, nullptr},
+      {__LINE__, "[,,null]", 3, nullptr},
       {__LINE__, "[[],,,]", 4, arrGetAnd(0, checkEq(emptyArray))},
       {__LINE__, "[,[],,]", 4, arrGetAnd(1, checkEq(emptyArray))},
       {__LINE__, "[,,,[]]", 4, arrGetAnd(3, checkEq(emptyArray))},