small further change

helps a bit more, perhaps

libvips/iofuncs/init.c

@@ -222,11 +222,12 @@ vips_init( const char *argv0 )
 	/* We make regions in parallel, so we have to be careful that any
 	 * associated types are fully built before we start. We can't init the
 	 * clases in two separate threads.
+	 *
+	 * We can't unref these two, since the last unref of  the last region
+	 * will finalize the class and trigger re-init.
 	 */
 	image = vips_image_new( "p" );
 	region = vips_region_new( image );
-	g_object_unref( region );
-	g_object_unref( image );
 
 	/* Load up any plugins in the vips libdir. We don't error on failure,
 	 * it's too annoying to have VIPS refuse to start because of a broken