evolve: drop a very old safe guard about bad marker
The do not clean marker with nullrev successors. I assume none of them remains.
6c6bb7a23bb5125bf06da73265f039dd3447dafa 0.1.0
d3f20770b86a31dba56ae7b252089e12b34702da 0.2.0
c046b083a5e0b21af69027f31cee141800cf894b 0.3.0
9bbcd274689829d9239978236e16610688978233 0.4.0
4ecbaec1d664b1e6f8ebc78292e1ced77a8e69c0 0.4.1
7ef8ab8c6feadb8a9d9e13af144a17cb23e9a38d 0.5
4a5488c01a66be4729252175cea0ea739a88a540 0.6
18a0d96ed559089edf90206c469f3f8c26681c64 0.7
18a0d96ed559089edf90206c469f3f8c26681c64 0.7
1b2757c1bd918509184f6c1d06b2329a847e31b0 0.7
b18b000363550f02f413aed008f8e306318c608c 1.0.0
ca5bb72d14aeb6e6053e3a53c064a2b7dc8010e5 1.0.1
b1bdcb4506defef0e857e2710633f7686d8034a5 1.0.2
5559e5a4b656978c592d364f242edc62369d7e84 1.0.2
c062edbcaf13135d0312fd2039deca74573ff4f0 1.1.0
22cacfce2a65ab965c6179ae862b148f4abc7d8a 1.1.0
d43e80504e55db9ad4826e860e50530103a27b0f 2.0.0
f9d305deeff3dba782e65faf4ef3fd1569995859 2.1.0
862b6b71a35836e81f090ba7229c2888e8ed2f9f 3.0.0
cdb52bbbe5b8770d5e68943b7e73bee4ba136ecc 3.1.0
c3ba8a965a7a173e388d84819e936ea9bae9797f 3.2.0
83882f2fbecba0b7e7f7e5d490b57db93bd7fa22 3.3.0
fc04758ea9f549684989ee673b04d9724756dc85 3.3.1
a03ea39aca2a66ea36817512d586dcbc99dbfe9b 3.3.2
0304fc2bab158658df53a8f4edd5aa300a9497d2 4.0.0
e914884fb7210d6350d94909cb25ebc602359680 4.0.1
4d5d101e878f6d6264a8e036b11afdf922c4ef94 4.1.0