[babl] babl-internal: print debug output to stderr

[Øyvind Kolås <ok src gnome org>]

commit ebb2352236f7b0da35abd5513fa2ab16dc0a7452
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Apr 25 20:22:38 2018 +0200

    babl-internal: print debug output to stderr

 babl/babl-icc.c      |    4 ++--
 babl/babl-internal.h |    8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/babl/babl-icc.c b/babl/babl-icc.c
index 20841b9..2e934e4 100644
--- a/babl/babl-icc.c
+++ b/babl/babl-icc.c
@@ -342,7 +342,7 @@ static const Babl *babl_trc_from_icc (ICC  *state, int offset,
                 fprintf (stderr, "%f %f %f %f %f %f %f\n",
                               g, a, b, c, d, e, f);
             {
-              fprintf (stdout, "unhandled parametric sRGB formula TRC type %i\n", function_type);
+              fprintf (stderr, "unhandled parametric sRGB formula TRC type %i\n", function_type);
               *error = "unhandled sRGB formula like TRC";
               return babl_trc_gamma (2.2);
             }
@@ -350,7 +350,7 @@ static const Babl *babl_trc_from_icc (ICC  *state, int offset,
               break;
             default:
               *error = "unhandled parametric TRC";
-              fprintf (stdout, "unhandled parametric TRC type %i\n", function_type);
+              fprintf (stderr, "unhandled parametric TRC type %i\n", function_type);
               return babl_trc_gamma (2.2);
             break;
          }
diff --git a/babl/babl-internal.h b/babl/babl-internal.h
index 896ae81..1a65fd3 100644
--- a/babl/babl-internal.h
+++ b/babl/babl-internal.h
@@ -127,7 +127,7 @@ real_babl_log_va(const char *file,
           __android_log_print (ANDROID_LOG_DEBUG, "BABL",
                                "When loading %s:\n\t", babl_extender()->instance.name);
 #else
-          fprintf (stdout, "When loading %s:\n\t", babl_extender()->instance.name);
+          fprintf (stderr, "When loading %s:\n\t", babl_extender()->instance.name);
 #endif
         }
 
@@ -135,7 +135,7 @@ real_babl_log_va(const char *file,
       __android_log_print (ANDROID_LOG_DEBUG, "BABL",
                            "%s:%i %s()", file, line, function);
 #else
-      fprintf (stdout, "%s:%i %s()\n\t", file, line, function);
+      fprintf (stderr, "%s:%i %s()\n\t", file, line, function);
 #endif
     }
 
@@ -143,8 +143,8 @@ real_babl_log_va(const char *file,
   __android_log_vprint (ANDROID_LOG_DEBUG, "BABL",
                         fmt, varg);
 #else
-  vfprintf (stdout, fmt, varg);
-  fprintf (stdout, "\n");
+  vfprintf (stderr, fmt, varg);
+  fprintf (stderr, "\n");
   fflush (NULL);
 #endif
   return;