[gthumb] print the exiv2 error

[Paolo Bacchilega <paobac src gnome org>]

commit 7927c34de83aa74ab5f2340f6a8dc8c688b122e9
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Tue Mar 2 12:54:26 2010 +0100

    print the exiv2 error

 extensions/exiv2_tools/exiv2-utils.cpp |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/extensions/exiv2_tools/exiv2-utils.cpp b/extensions/exiv2_tools/exiv2-utils.cpp
index cf602b8..6d31b4a 100644
--- a/extensions/exiv2_tools/exiv2-utils.cpp
+++ b/extensions/exiv2_tools/exiv2-utils.cpp
@@ -752,6 +752,7 @@ exiv2_write_metadata (SavePixbufData *data)
 		catch (Exiv2::AnyError& e) {
 			if (data->error != NULL)
 				*data->error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, e.what());
+			g_warning ("%s\n", e.what());
 			return FALSE;
 		}
 	}