[babl] babl: increase precision of error included in babl-fishes cache

[Øyvind "pippin" Kolås <ok src gnome org>]

commit a874d8727dd413f2b149b424e2ff1b741beab0ab
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun May 24 04:04:15 2020 +0200

    babl: increase precision of error included in babl-fishes cache

 babl/babl-cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/babl/babl-cache.c b/babl/babl-cache.c
index 7479c9068..63ae19e7e 100644
--- a/babl/babl-cache.c
+++ b/babl/babl-cache.c
@@ -129,7 +129,7 @@ babl_fish_serialize (Babl *fish, char *dest, int n)
     n -= strlen (d);d += strlen (d);
   }
 
-  snprintf (d, n, " error=%f", fish->fish.error);
+  snprintf (d, n, " error=%.10f", fish->fish.error);
   n -= strlen (d);d += strlen (d);
 
   if (fish->class_type == BABL_FISH)