GUri build fixes
POTFILES.in fix from !1552 (closed) (if I put it in this MR on my fork of GLib, the FreeBSD CI won’t run and fail on it, since the FreeBSD CI only runs on
origin branches for tedious reasons).
The other fix is a thinko fix in my fuzzing test for
g_uri_parse(), which originally ignored the possibility that the fuzzer might provide an input binary blob which is not nul-terminated, and hence
g_uri_parse() might drop off the end of it.