v1.0.6: avoid possible nil entry.pb
I0410 15:17:53 72441 volume_layout.go:343] Volume 390 becomes unwritable I0410 15:17:53 72441 volume_layout.go:343] Volume 391 becomes unwritable I0410 15:17:53 72441 volume_layout.go:343] Volume 394 becomes unwritable I0410 15:17:53 72441 volume_layout.go:343] Volume 392 becomes unwritable I0410 15:17:58 72441 volume_layout.go:343] Volume 393 becomes unwritable I0410 15:17:58 72441 volume_layout.go:343] Volume 395 becomes unwritable panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1962c8a] goroutine 68239935 [running]: github.com/chrislusf/raft.(*LogEntry).Term(...) /home/travis/gopath/pkg/mod/github.com/chrislusf/[email protected]/log_entry.go:59 github.com/chrislusf/raft.(*server).TakeSnapshot(0xc00014f320, 0xc028b5a600, 0xc03995bc00) /home/travis/gopath/pkg/mod/github.com/chrislusf/[email protected]/server.go:1276 +0x50a github.com/chrislusf/raft.(*server).maybeTakeSnapshot.func1(0xc00014f320) /home/travis/gopath/pkg/mod/github.com/chrislusf/[email protected]/server.go:1221 +0x5b created by github.com/chrislusf/raft.(*server).maybeTakeSnapshot /home/travis/gopath/pkg/mod/github.com/chrislusf/[email protected]/server.go:1219 +0x98