[babl] rename define for default BABL_TOLERANCE to match envvar

[Øyvind Kolås <ok src gnome org>]

commit 6f0e1fe6f45aba7bb52b0c3e7c3ea1fc6e2489ac
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Nov 28 12:14:45 2016 +0100

    rename define for default BABL_TOLERANCE to match envvar

 babl/babl-fish-path.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/babl/babl-fish-path.c b/babl/babl-fish-path.c
index f4df8cf..23e7757 100644
--- a/babl/babl-fish-path.c
+++ b/babl/babl-fish-path.c
@@ -21,7 +21,7 @@
 #include "babl-internal.h"
 #include "babl-ref-pixels.h"
 
-#define BABL_LEGAL_ERROR           0.000006
+#define BABL_TOLERANCE             0.000006
 #define BABL_MAX_COST_VALUE        2000000
 #define BABL_HARD_MAX_PATH_LENGTH  8
 #define BABL_MAX_NAME_LEN          1024
@@ -111,7 +111,7 @@ double _babl_legal_error (void)
   if (env && env[0] != '\0')
     error = babl_parse_double (env);
   else
-    error = BABL_LEGAL_ERROR;
+    error = BABL_TOLERANCE;
 
   env = getenv ("BABL_DEBUG_CONVERSIONS");
   if (env && env[0] != '\0')