respective changes added

modules/features2d/src/matchers.cpp

@@ -613,8 +613,7 @@ void DescriptorMatcher::checkMasks( InputArrayOfArrays _masks, int queryDescript
             {
                 int rows = trainDescCollection[i].empty() ? utrainDescCollection[i].rows : trainDescCollection[i].rows;
                     CV_Assert( masks[i].rows == queryDescriptorsCount &&
-                        (masks[i].cols == rows || masks[i].cols == rows) &&
+                        masks[i].cols == rows && masks[i].type() == CV_8UC1);
-                        masks[i].type() == CV_8UC1 );
             }
         }
     }
@@ -1357,5 +1356,4 @@ void FlannBasedMatcher::radiusMatchImpl( InputArray _queryDescriptors, std::vect
 
     convertToDMatches( mergedDescriptors, indices, dists, matches );
 }
-
 }