Update src/http_server.cc

Co-authored-by: Yingge He <157551214+yinggeh@users.noreply.github.com>

Author: whoisj

src/http_server.cc

@@ -607,7 +607,7 @@ ReadDataFromJsonHelper(
         size_t len = 0;
         RETURN_IF_ERR(tensor_data.AsString(&cstr, &len));
         // Quick sanity check to ensure we don't write beyond `expected_cnt`.
-        int32_t value = *counter + len + sizeof(uint32_t);
+        int32_t actual_cnt = *counter + len + sizeof(uint32_t);
         if (len < 0 || value < 0) {
           return TRITONSERVER_ErrorNew(
               TRITONSERVER_ERROR_INTERNAL,