[easytag] Check for an error when creating a temporary file

[David King <davidk src gnome org>]

commit b9224a1d8775a8f5ebefb5b60a25270050909c6b
Author: David King <amigadave amigadave com>
Date:   Mon Jun 29 19:01:31 2015 +0100

    Check for an error when creating a temporary file
    
    Remove a FIXME in the TagLib GIO wrapper.

 src/tags/gio_wrapper.cc |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/src/tags/gio_wrapper.cc b/src/tags/gio_wrapper.cc
index 234e217..8716331 100644
--- a/src/tags/gio_wrapper.cc
+++ b/src/tags/gio_wrapper.cc
@@ -262,8 +262,13 @@ GIO_IOStream::insert (TagLib::ByteVector const &data,
     }
 
     GFileIOStream *tstr;
-    /* FIXME: Check for NULL. */
-    GFile *tmp = g_file_new_tmp ("easytag-XXXXXX", &tstr, NULL);
+    GFile *tmp = g_file_new_tmp ("easytag-XXXXXX", &tstr, &error);
+
+    if (tmp == NULL)
+    {
+        return;
+    }
+
     char buffer[4096];
     gsize r;