Library returning "nil" for some cells

[shadyabhi]

Excel Sheet: Google Drive link for the excel sheet

Sample code which is panicing due to nil value.

➜ $?=0 /tmp [ 8:37AM] % cat main.go
package main

import "fmt"
import "github.com/extrame/xls"

func main() {
        if xlFile, err := xls.Open("expenses.xls", "utf-8"); err == nil {
                if sheet1 := xlFile.GetSheet(0); sheet1 != nil {
                        fmt.Print("Total Lines ", sheet1.MaxRow, sheet1.Name)
                        col1 := sheet1.Rows[0].Cols[0]
                        col2 := sheet1.Rows[0].Cols[0]
                        for i := 0; i <= (int(sheet1.MaxRow)); i++ {
                                row1 := sheet1.Rows[uint16(i)]
                                col1 = row1.Cols[0]
                                col2 = row1.Cols[1]
                                fmt.Print("\n", col1.String(xlFile), ",", col2.String(xlFile))
                        }
                }
        }
}

>>>  0s elasped...
➜ $?=0 /tmp [ 8:37AM] % go run main.go
Total Lines 1Transactions
[Sr. No. ],[Date]panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0x243d]

goroutine 1 [running]:
panic(0xb96e0, 0xc42000a110)
        /usr/local/Cellar/go/1.7.3/libexec/src/runtime/panic.go:500 +0x1a1
main.main()
        /tmp/main.go:16 +0x3fd
exit status 2

>>>  0s elasped...
➜ $?=1 /tmp [ 8:37AM] %

[extrame]

It should be fixed