Don't crash in gss_release_oid() when the application is doing nothing
more than importing a name and freeing it (gss_release_name() calls
gss_release_oid(), but gss_import_name() doesn't initialize the library,
so gss_release_oid() hits an assertion failure when it tries to lock the
mechanism list).

Upstream RT #4088/4096.

--- krb5-1.5/src/lib/gssapi/mechglue/g_initialize.c	2006-08-07 13:10:19.000000000 -0400
+++ krb5-1.5/src/lib/gssapi/mechglue/g_initialize.c	2006-08-07 13:10:13.000000000 -0400
@@ -91,6 +91,8 @@
 
 	if (minor_status == NULL)
 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
+	if (gssint_initialize_library())
+		return GSS_S_FAILURE;
 
 	*minor_status = 0;