[pdftex] mapfile.c: assert() statements

[Christian Schenk]

Hope this is the right place to report the following:

I am playing with the new pdfTeX version (1.20a-rc1) and stumbled accross
some assert() statements which will cause problems in a release build, i.e.,

mapfile.c, line 275:
            assert(avl_probe(tfm_tree, fp) != NULL);


-Christian