vfs_cluster.c: Do not propagate VOP_BMAP errors to the callerHEADmain

The code that makes this VOP_BMAP call tries to perform a read-ahead I/O
operation. Failing to do that for any reason isn't fatal for `cluster_read()`,
because we still can return some data to the caller. This change is consistent
with other places within `cluster_read()`, where error returned by VOP_BMAP is
not returned to the caller - see the `if (nblks > 1)` block above the changed
lines and `if (reqbp)` at the end of the function.

PR:	264196
Approved by:	markj, kib
Differential Revision: https://reviews.freebsd.org/D51254

0 files changed, 0 insertions, 0 deletions