Added cppcheck workflow

src/p2pool_api.cpp

@@ -129,6 +129,7 @@ void p2pool_api::dump_to_file()
 	}
 
 	for (auto& it : data) {
+		// cppcheck-suppress uninitvar
 		DumpFileWork* work = new DumpFileWork{ {}, {}, {}, it.first, std::move(it.second) };
 		work->open_req.data = work;
 		work->write_req.data = work;