[gnome-software] Don't show small screenshots on HiDPI hardware

[Richard Hughes <rhughes src gnome org>]

commit 432be8039e725fb075ab6b1c73032b223bc4daa3
Author: Richard Hughes <richard hughsie com>
Date:   Thu Feb 19 13:15:32 2015 +0000

    Don't show small screenshots on HiDPI hardware
    
    If as_screenshot_get_image() doesn't find the exact resolution requested,
    it returns the one closest to the required size.

 src/gs-screenshot-image.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-screenshot-image.c b/src/gs-screenshot-image.c
index 3c1004d..e2018f9 100644
--- a/src/gs-screenshot-image.c
+++ b/src/gs-screenshot-image.c
@@ -375,7 +375,7 @@ gs_screenshot_image_load_async (GsScreenshotImage *ssimg,
                                              priv->width * 2,
                                              priv->height * 2);
                if (im != NULL)
-                       priv->scale *= 2;
+                       priv->scale = as_image_get_width (im) / priv->width;
        }
 
        /* fallback to LoDPI if it exists */