fixes

modules/wechat_qrcode/perf/perf_main.cpp

@@ -3,4 +3,20 @@
 // of this distribution and at http://opencv.org/license.html.
 #include "perf_precomp.hpp"
 
+static
+void initTests()
+{
+#ifdef HAVE_OPENCV_DNN
+    const char* extraTestDataPath =
+#ifdef WINRT
+        NULL;
+#else
+        getenv("OPENCV_DNN_TEST_DATA_PATH");
+#endif
+    if (extraTestDataPath)
+        cvtest::addDataSearchPath(extraTestDataPath);
+#endif  // HAVE_OPENCV_DNN
+}
+
+CV_TEST_MAIN("cv", initTests())
 CV_PERF_TEST_MAIN(wechat_qrcode)