kinit: increase environment limit

Limit is already increased for standard xorg plasma distribution to
start, but with wayland, even more libraries being added

Increasing this limit to 1 << 20 (1M) seems to be enough (For me
length is 80K), and not so much for regular desktops

Signed-off-by: Yaroslav Bolyukin <iam@lach.pw>

pkgs/development/libraries/kde-frameworks/kinit/0004-start_kdeinit-environ-hard-limit.patch

@@ -17,7 +17,7 @@ index f2db3e9..4ff2602 100644
                      if (read(0, &len, sizeof(unsigned)) == sizeof(unsigned)
 -                            && len && len < (1 << 12)) {
 +                            && len) {
-+                        if (len >= (1 << 14)) {
++                        if (len >= (1 << 20)) {
 +                            fprintf(stderr, "%s: exceeded environment length limit", argv[0]);
 +                            return 1;
 +                        }