Moved Scalar variable 'value' to int main() to work around a GCC -Wshadow warning in operations.hpp

samples/cpp/tutorial_code/ImgTrans/copyMakeBorder_demo.cpp

@@ -15,7 +15,6 @@ using namespace cv;
 Mat src, dst;
 int top, bottom, left, right;
 int borderType;
-Scalar value;
 const char* window_name = "copyMakeBorder Demo";
 RNG rng(12345);
 
@@ -64,7 +63,7 @@ int main( int, char** argv )
          else if( (char)c == 'r' )
            { borderType = BORDER_REPLICATE; }
 
-         value = Scalar( rng.uniform(0, 255), rng.uniform(0, 255), rng.uniform(0, 255) );
+         Scalar value( rng.uniform(0, 255), rng.uniform(0, 255), rng.uniform(0, 255) );
          copyMakeBorder( src, dst, top, bottom, left, right, borderType, value );
 
          imshow( window_name, dst );