Slice index out of range when doing batch insert.

[WolfEYc]

app/vendor/github.com/sijms/go-ora/v2/connection.go:1143 +0x7d |  

github.com/sijms/go-ora/v2.(*Connection).ExecContext(0x0?, {0x9d5ec8, 0xc000190700}, {0x9153ac?, 0x0?}, {0xc000235908, 0xf, 0xf}) |  
/app/vendor/github.com/sijms/go-ora/v2/command.go:1247 +0x1cb |  
github.com/sijms/go-ora/v2.(*Stmt).ExecContext(0xc0000ad2b0, {0x9d5ec8, 0xc000190700}, {0xc000235908, 0xf, 0xf}) |  
/app/vendor/github.com/sijms/go-ora/v2/command.go:1629 +0x96f |  
github.com/sijms/go-ora/v2.(*Stmt)._exec(0xc0000ad2b0, {0xc000235908, 0xf, 0x280?}) |  
/usr/local/go/src/reflect/value.go:1418 +0x167 |  
reflect.Value.Index({0x846d60?, 0xc007f30dc8?, 0xc00038c7e0?}, 0x0?) |  
/usr/local/go/src/runtime/panic.go:792 +0x132 |  
panic({0x84bd60?, 0x9cf990?}) |  
/usr/local/go/src/net/http/server.go:1947 +0xbe |  
net/http.(*conn).serve.func1() |  
goroutine 18095 [running]: |  
http: panic serving 192.168.12.149:49488: reflect: slice index out of range