[gimp/gimp-2-8] libgimpbase: improve warning when a string can't be converted to a GimpUnit (cherry picked from comm

[Michael Natterer <mitch src gnome org>]

commit d4cfda87ff31a75ff9a49dc4779cbfd61cdde2b9
Author: Michael Natterer <mitch gimp org>
Date:   Thu Oct 4 22:53:14 2012 +0200

    libgimpbase: improve warning when a string can't be converted to a GimpUnit
    (cherry picked from commit 38a8e67e0303c3bc3c93279ec2c4876902803221)

 libgimpbase/gimpunit.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgimpbase/gimpunit.c b/libgimpbase/gimpunit.c
index cbd4aa9..aba477e 100644
--- a/libgimpbase/gimpunit.c
+++ b/libgimpbase/gimpunit.c
@@ -109,7 +109,7 @@ string_to_unit (const GValue *src_value,
   return;
 
  error:
-  g_warning ("Can't convert string to GimpUnit.");
+  g_warning ("Can't convert string '%s' to GimpUnit.", str);
 }