[util] Fix uninitialized memory access
diff --git a/util/view-cairo.hh b/util/view-cairo.hh
index 2c504c1..7fe217c 100644
--- a/util/view-cairo.hh
+++ b/util/view-cairo.hh
@@ -36,7 +36,7 @@
   view_cairo_t (option_parser_t *parser)
 	       : output_options (parser, helper_cairo_supported_formats),
 		 view_options (parser),
-		 lines (0), scale (1.0) {}
+		 lines (0), scale (1.0), direction (HB_DIRECTION_INVALID) {}
   ~view_cairo_t (void) {
     if (debug)
       cairo_debug_reset_static_data ();