Diskdetails helper

OS retrieved from GOOS and switch case added on same --OnkarS

diskdetailshelper/gopsutil/disk_windows.go

@@ -3,8 +3,8 @@
 package gopsutil
 
 import (
-	"regexp"
 	"bytes"
+	"regexp"
 	"unsafe"
 
 	"corelab.mkcl.org/MKCLOS/coredevelopmentplatform/coreospackage/logginghelper"
@@ -197,13 +197,13 @@ func GetDiskSerialNumber(name string) string {
 	info, err := host.Info()
 	if err != nil {
 		logginghelper.LogError("GetDiskSerialNumber Host Info() Err : ", err)
-		return ""
+		// return ""
 	}
 	cmd := &exec.Cmd{}
-	if strings.Contains(info.Platform, "Windows 7") || strings.Contains(info.Platform, "Windows 10") {
-		cmd = exec.Command("wmic","diskdrive","get","serialnumber")
+	if err == nil && (strings.Contains(info.Platform, "Windows 7") || strings.Contains(info.Platform, "Windows 10")) {
+		cmd = exec.Command("wmic", "diskdrive", "get", "serialnumber")
 	} else {
-		cmd = exec.Command("wmic","path","win32_physicalmedia","get","SerialNumber")
+		cmd = exec.Command("wmic", "path", "win32_physicalmedia", "get", "SerialNumber")
 	}
 	var out bytes.Buffer
 	cmd.Stdout = &out