[gnome-builder/wip/chergert/gutter] fix diag positioning

[Christian Hergert <chergert src gnome org>]

commit ee6f6d5af76f3606c1e4ea89b7e5ea29e0438ed2
Author: Christian Hergert <chergert redhat com>
Date:   Sun Sep 17 19:47:16 2017 -0700

    fix diag positioning

 libide/sourceview/ide-omni-gutter-renderer.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libide/sourceview/ide-omni-gutter-renderer.c b/libide/sourceview/ide-omni-gutter-renderer.c
index 61f602c..6de1a69 100644
--- a/libide/sourceview/ide-omni-gutter-renderer.c
+++ b/libide/sourceview/ide-omni-gutter-renderer.c
@@ -726,12 +726,12 @@ draw_diagnostic (IdeOmniGutterRenderer        *self,
     {
       cairo_rectangle (cr,
                        area->x + 2,
-                       area->y + ((area->height - DIAGNOSTICS_SIZE) / 2) + 1,
+                       area->y + ((area->height - DIAGNOSTICS_SIZE) / 2),
                        DIAGNOSTICS_SIZE, DIAGNOSTICS_SIZE);
       cairo_set_source_surface (cr,
                                 surface,
                                 area->x + 2,
-                                area->y + ((area->height - DIAGNOSTICS_SIZE) / 2) + 1);
+                                area->y + ((area->height - DIAGNOSTICS_SIZE) / 2));
       cairo_paint (cr);
     }
 }