fix memory leak

Signed-off-by: wangben <wangben15@huawei.com>

process/js_process.cpp

@@ -224,18 +224,24 @@ namespace OHOS::Js_sys_module::Process {
         napi_get_value_string_utf8(env_, str, buffer, bufferSize + 1, &bufferSize);
         if (function == nullptr) {
             HILOG_ERROR("function is nullptr");
+            delete []buffer;
+            buffer = nullptr;
             return;
         }
         napi_ref myCallRef = nullptr;
         napi_status status = napi_create_reference(env_, function, 1, &myCallRef);
         if (status != napi_ok) {
             HILOG_ERROR("napi_create_reference is failed");
+            delete []buffer;
+            buffer = nullptr;
             return;
         }
         if (buffer != nullptr) {
             size_t pos = events.find(buffer);
             if (pos == std::string::npos) {
                 HILOG_ERROR("illegal event");
+                delete []buffer;
+                buffer = nullptr;
                 return;
             }
             eventMap.insert(std::make_pair(buffer, myCallRef));