lavc/ccaption_dec: clean up whitespace

libavcodec/ccaption_dec.c

@@ -297,7 +297,6 @@ static void roll_up(CCaptionSubContext *ctx)
     for (i = 0; i < ctx->cursor_row - keep_lines; i++)
         UNSET_FLAG(screen->row_used, i);
 
-
     for (i = 0; i < keep_lines && screen->row_used; i++) {
         const int i_row = ctx->cursor_row - keep_lines + i + 1;
 
@@ -306,8 +305,8 @@ static void roll_up(CCaptionSubContext *ctx)
         memcpy(screen->fonts[i_row], screen->fonts[i_row+1], SCREEN_COLUMNS);
         if (CHECK_FLAG(screen->row_used, i_row + 1))
             SET_FLAG(screen->row_used, i_row);
-
     }
+
     UNSET_FLAG(screen->row_used, ctx->cursor_row);
 }