Fix ocl build warnings

modules/ocl/test/test_arithm.cpp

@@ -1110,8 +1110,8 @@ TEST_P(Phase, Mat)
         for(int j = 0; j < LOOP_TIMES; j++)
         {
             random_roi();
-            cv::phase(mat1_roi, mat2_roi, dst_roi, angelInDegrees);
-            cv::ocl::phase(gmat1, gmat2, gdst, angelInDegrees);
+            cv::phase(mat1_roi, mat2_roi, dst_roi, angelInDegrees ? true : false);
+            cv::ocl::phase(gmat1, gmat2, gdst, angelInDegrees ? true : false);
 
             cv::Mat cpu_dst;
             gdst_whole.download(cpu_dst);

samples/ocl/facedetect.cpp

@@ -180,7 +180,7 @@ _cleanup_:
 }
 
 void detectAndDraw( Mat& img,
-    cv::ocl::OclCascadeClassifier& cascade, CascadeClassifier& nestedCascade,
+    cv::ocl::OclCascadeClassifier& cascade, CascadeClassifier&,
     double scale)
 {
     int i = 0;

samples/ocl/surf_matcher.cpp

@@ -217,10 +217,10 @@ int main(int argc, char* argv[])
     perspectiveTransform( obj_corners, scene_corners, H);
 
     //-- Draw lines between the corners (the mapped object in the scene - image_2 )
-    line( img_matches, scene_corners[0] + Point2f( cpu_img1.cols, 0), scene_corners[1] + Point2f( cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
-    line( img_matches, scene_corners[1] + Point2f( cpu_img1.cols, 0), scene_corners[2] + Point2f( cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
-    line( img_matches, scene_corners[2] + Point2f( cpu_img1.cols, 0), scene_corners[3] + Point2f( cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
-    line( img_matches, scene_corners[3] + Point2f( cpu_img1.cols, 0), scene_corners[0] + Point2f( cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
+    line( img_matches, scene_corners[0] + Point2f( (float)cpu_img1.cols, 0), scene_corners[1] + Point2f( (float)cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
+    line( img_matches, scene_corners[1] + Point2f( (float)cpu_img1.cols, 0), scene_corners[2] + Point2f( (float)cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
+    line( img_matches, scene_corners[2] + Point2f( (float)cpu_img1.cols, 0), scene_corners[3] + Point2f( (float)cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
+    line( img_matches, scene_corners[3] + Point2f( (float)cpu_img1.cols, 0), scene_corners[0] + Point2f( (float)cpu_img1.cols, 0), Scalar( 0, 255, 0), 4 );
 
     //-- Show detected matches
     namedWindow("ocl surf matches", 0);