fix CallContract conversion panic

(cherry picked from commit a6d3f48)

Author: dhaidashenko

pkg/chains/evm/proto_helpers.go

@@ -192,9 +192,20 @@ func ConvertCallMsgFromProto(protoMsg *CallMsg) (*evmtypes.CallMsg, error) {
 	if protoMsg == nil {
 		return nil, errEmptyMsg
 	}
+	var from evmtypes.Address
+	if len(protoMsg.From) != 0 {
+		if len(protoMsg.From) != evmtypes.AddressLength {
+			return nil, fmt.Errorf("invalid from address length: expected %d, got %d", evmtypes.AddressLength, len(protoMsg.From))
+		}
+
+		from = evmtypes.Address(protoMsg.From)
+	}
 
+	if len(protoMsg.To) != evmtypes.AddressLength {
+		return nil, fmt.Errorf("invalid to address length: expected %d, got %d", evmtypes.AddressLength, len(protoMsg.To))
+	}
 	return &evmtypes.CallMsg{
-		From: evmtypes.Address(protoMsg.GetFrom()),
+		From: from,
 		Data: protoMsg.GetData(),
 		To:   evmtypes.Address(protoMsg.GetTo()),
 	}, nil