[gimp/pippin/linear-is-the-new-black] app: avoid no-op precision convert on import

[Øyvind Kolås <ok src gnome org>]

commit d4e62e5f7eabf49a189fb8fa2874dbe8bb1aa433
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Dec 15 22:50:14 2016 +0100

    app: avoid no-op precision convert on import

 app/file/file-open.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/app/file/file-open.c b/app/file/file-open.c
index 38a5c21..63cb67d 100644
--- a/app/file/file-open.c
+++ b/app/file/file-open.c
@@ -279,11 +279,13 @@ file_open_image (Gimp                *gimp,
     {
       gimp_image_undo_disable (image);
 
-      gimp_image_convert_precision (image, GIMP_PRECISION_FLOAT_LINEAR,
-                                           GEGL_DITHER_NONE,
-                                           GEGL_DITHER_NONE,
-                                           GEGL_DITHER_NONE,
-                                           progress);
+      if (gimp_image_get_precision (image) != GIMP_PRECISION_FLOAT_LINEAR)
+
+        gimp_image_convert_precision (image, GIMP_PRECISION_FLOAT_LINEAR,
+                                             GEGL_DITHER_NONE,
+                                             GEGL_DITHER_NONE,
+                                             GEGL_DITHER_NONE,
+                                             progress);
 
       gimp_image_import_color_profile (image, context, progress,
                                        run_mode == GIMP_RUN_INTERACTIVE ?