Hotfix panic when unbonding unbonded validator

go.mod

@@ -131,7 +131,7 @@ require (
 // point sdk to fork and follow replaces at https://github.com/cosmos/cosmos-sdk/blob/v0.44.8/go.mod
 replace (
 	github.com/99designs/keyring => github.com/cosmos/keyring v1.1.7-0.20210622111912-ef00f8ac3d76
-	github.com/cosmos/cosmos-sdk => github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix
+	github.com/cosmos/cosmos-sdk => github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix-hotfix-1
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.7.0
 	github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
 	google.golang.org/grpc => google.golang.org/grpc v1.33.2

go.sum

@@ -610,8 +610,8 @@ github.com/libp2p/go-buffer-pool v0.0.2 h1:QNK2iAFa8gjAe1SPz6mHSMuCcjs+X1wlHzeOS
 github.com/libp2p/go-buffer-pool v0.0.2/go.mod h1:MvaB6xw5vOrDl8rYZGLFdKAuk/hRoRZd1Vi32+RXyFM=
 github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-bc2310a04743/go.mod h1:qklhhLq1aX+mtWk9cPHPzaBjWImj5ULL6C7HFJtXQMM=
 github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
-github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix h1:bM/EyiGVGi678UDW1RPtbFck2hEindc5IO302M5DF38=
-github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix/go.mod h1:xkaQHdLk55zxd1C2sR6dKh53QVoBW0IWFsKv3nQKwtY=
+github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix-hotfix-1 h1:j6oPbp/pf6Rwk5mwwZF8M1GLo5V8LfHlJPS1On0pqJQ=
+github.com/likecoin/cosmos-sdk v0.44.8-dual-prefix-hotfix-1/go.mod h1:xkaQHdLk55zxd1C2sR6dKh53QVoBW0IWFsKv3nQKwtY=
 github.com/lucasjones/reggen v0.0.0-20180717132126-cdb49ff09d77/go.mod h1:5ELEyG+X8f+meRWHuqUOewBOhvHkl7M76pdGEansxW4=
 github.com/lyft/protoc-gen-star v0.5.3/go.mod h1:V0xaHgaf5oCCqmcxYcWiDfTiKsZsRc87/1qhoTACD8w=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=