Merge pull request opencv#18981 from anton-potapov:fix_gnet_package_compilation_std_17

Author: alalek

modules/gapi/include/opencv2/gapi/infer.hpp

@@ -418,8 +418,8 @@ struct GAPI_EXPORTS GNetParam {
  * @sa cv::gapi::networks
  */
 struct GAPI_EXPORTS_W_SIMPLE GNetPackage {
-    GAPI_WRAP GNetPackage() : GNetPackage({}) {}
-    explicit GNetPackage(std::initializer_list<GNetParam> &&ii);
+    GAPI_WRAP GNetPackage() = default;
+    explicit GNetPackage(std::initializer_list<GNetParam> ii);
     std::vector<GBackend> backends() const;
     std::vector<GNetParam> networks;
 };

modules/gapi/src/api/ginfer.cpp

@@ -16,8 +16,8 @@
 
 #include <opencv2/gapi/infer.hpp>
 
-cv::gapi::GNetPackage::GNetPackage(std::initializer_list<GNetParam> &&ii)
-    : networks(std::move(ii)) {
+cv::gapi::GNetPackage::GNetPackage(std::initializer_list<GNetParam> ii)
+    : networks(ii) {
 }
 
 std::vector<cv::gapi::GBackend> cv::gapi::GNetPackage::backends() const {