Fix out of bounds write

blendin · alalek · commit 0202e527476d · 2017-10-09T15:10:03.000+03:00
diff --git a/modules/highgui/src/grfmt_bmp.cpp b/modules/highgui/src/grfmt_bmp.cpp
@@ -367,6 +367,9 @@ decode_rle4_bad: ;
                                                 gray_palette[code] );
 
                         line_end_flag = y - prev_y;
+
+                        if( y >= m_height )
+                            break;
                     }
                     else if( code > 2 ) // absolute mode
                     {
