Merge pull request #21937 from Kumataro:4.x-fix-21911

* Fix warnings for clang15

* Fix warnings: Remove unnecessary code

* Fix warnings: Remove unnecessary code

modules/video/test/test_optflowpyrlk.cpp

@@ -64,10 +64,9 @@ void CV_OptFlowPyrLKTest::run( int )
     const int bad_points_max = 8;
 
     /* test parameters */
-    double  max_err = 0., sum_err = 0;
-    int     pt_cmpd = 0;
+    double  max_err = 0.;
     int     pt_exceed = 0;
-    int     merr_i = 0, merr_j = 0, merr_k = 0, merr_nan = 0;
+    int     merr_i = 0, merr_nan = 0;
     char    filename[1000];
 
     cv::Point2f *v = 0, *v2 = 0;
@@ -155,7 +154,6 @@ void CV_OptFlowPyrLKTest::run( int )
             double err;
             if( cvIsNaN(v[i].x) || cvIsNaN(v[i].y) )
             {
-                merr_j++;
                 continue;
             }
 
@@ -173,15 +171,12 @@ void CV_OptFlowPyrLKTest::run( int )
             }
 
             pt_exceed += err > success_error_level;
-            sum_err += err;
-            pt_cmpd++;
         }
         else
         {
             if( !cvIsNaN( v[i].x ))
             {
                 merr_i = i;
-                merr_k++;
                 ts->printf( cvtest::TS::LOG, "The algorithm lost the point #%d\n", i );
                 code = cvtest::TS::FAIL_BAD_ACCURACY;
                 break;

modules/video/test/test_trackers.impl.hpp

@@ -336,7 +336,6 @@ void TrackerTest<Tracker, ROI_t>::checkDataTest()
     gt2.open(gtFile.c_str());
     ASSERT_TRUE(gt2.is_open()) << gtFile;
     string line2;
-    int bbCounter2 = 0;
     while (getline(gt2, line2))
     {
         vector<string> tokens = splitString(line2, ",");
@@ -344,7 +343,6 @@ void TrackerTest<Tracker, ROI_t>::checkDataTest()
         ASSERT_EQ((size_t)4, tokens.size()) << "Incorrect ground truth file " << gtFile;
 
         bbs.push_back(bb);
-        bbCounter2++;
     }
     gt2.close();