iohelper: Don't include newlines in error messages

The newline was pretty arbitrary, and we're better off
without it.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>

src/util/iohelper.c

@@ -236,7 +236,7 @@ main(int argc, char **argv)
     return 0;
 
  error:
-    fprintf(stderr, _("%s: failure with %s\n: %s"),
+    fprintf(stderr, _("%s: failure with %s: %s"),
             program_name, path, virGetLastErrorMessage());
     exit(EXIT_FAILURE);
 }