From 7813eef92b6111805732a645e51f1b91071c33c0 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Wed, 10 Oct 2018 19:26:19 +0000
Subject: [PATCH] fix build warnings

---
 modules/stitching/src/matchers.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/stitching/src/matchers.cpp b/modules/stitching/src/matchers.cpp
index e46d1f29ca..75261090c5 100644
--- a/modules/stitching/src/matchers.cpp
+++ b/modules/stitching/src/matchers.cpp
@@ -52,6 +52,10 @@ using namespace cv::cuda;
 #include "opencv2/xfeatures2d.hpp"
 using xfeatures2d::SURF;
 using xfeatures2d::SIFT;
+#else
+#  if defined(_MSC_VER)
+#    pragma warning(disable:4702)  // unreachable code
+#  endif
 #endif
 
 #ifdef HAVE_OPENCV_CUDAIMGPROC