MYSQL: Issue recognizing FLOAT / DECIMAL column type

[maksimovic]

sqlfuzz complains with unknown field type when it stumbles upon a column defined as FLOAT which doesn't have explicit length defined.

I also suspect that it has problems when it's actually defined. For example, I get this error on a table having DECIMAL(25,6):

panic: strconv.Atoi: parsing "6unsigned": invalid syntax

goroutine 25 [running]:
github.com/PumpkinSeed/sqlfuzz/drivers.length(0xc000144e60, 0x16, 0x13b1150, 0x7, 0xc00012d15a, 0x1, 0x1)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/drivers/helpers.go:24 +0x4b7
github.com/PumpkinSeed/sqlfuzz/drivers.MySQL.MapField(0x7ffeefbffaa3, 0x8, 0x7ffeefbffaaf, 0x6, 0x7ffeefbffab9, 0x15, 0x7ffeefbffad2, 0x9, 0x7ffeefbffadf, 0x4, ...)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/drivers/mysql.go:128 +0x9d3
github.com/PumpkinSeed/sqlfuzz/pkg/action.generateData(0x1457160, 0xc00012b620, 0xc000144e40, 0x15, 0xc000144e60, 0x16, 0xc00012ce79, 0x3, 0x0, 0x0, ...)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/pkg/action/action.go:117 +0x79
github.com/PumpkinSeed/sqlfuzz/pkg/action.SQLInsertInput.singleInsert(0xc0001548c0, 0x0, 0x13aac01, 0x101)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/pkg/action/action.go:107 +0x338
github.com/PumpkinSeed/sqlfuzz/pkg/action.SQLInsertInput.Insert(0xc0001548c0, 0x0, 0x7ffeefbffa01, 0x8)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/pkg/action/action.go:42 +0xb8
github.com/PumpkinSeed/sqlfuzz/pkg/fuzzer.worker(0xc0001025a0, 0xc00012d130, 0x7ffeefbffaa3, 0x8, 0x7ffeefbffaaf, 0x6, 0x7ffeefbffab9, 0x15, 0x7ffeefbffad2, 0x9, ...)
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/pkg/fuzzer/runner.go:50 +0x145
created by github.com/PumpkinSeed/sqlfuzz/pkg/fuzzer.runHelper
	/Users/loow/gopath/src/github.com/PumpkinSeed/sqlfuzz/pkg/fuzzer/runner.go:28 +0x138