Merge ~morphis/snappy-hwe-snaps/+git/wifi-ap:fix-int-overflow into ~snappy-hwe-team/snappy-hwe-snaps/+git/wifi-ap:master

[Simon Fels]

Fix compilation error on armhf and i386 for too big max int value

See https://launchpadlibrarian.net/301069373/buildlog_snap_ubuntu_xenial_armhf_wifi-ap-daily_BUILDING.txt.gz for example.

[System Enablement Bot (system-enablement-ci-bot)]

FAILED: Continuous integration, rev:25219d04aa9481222872432a1829d589168e7e8a
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/575/
Executed test runs:
    FAILURE: https://jenkins.canonical.com/system-enablement/job/generic-run-snap-spread-tests/308/console
    None: https://jenkins.canonical.com/system-enablement/job/generic-update-snap-mp/483/console

Click here to trigger a rebuild:
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/575/rebuild

review: Needs Fixing (continuous-integration)

[System Enablement Bot (system-enablement-ci-bot)]

FAILED: Continuous integration, rev:25219d04aa9481222872432a1829d589168e7e8a
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/576/
Executed test runs:
    FAILURE: https://jenkins.canonical.com/system-enablement/job/generic-run-snap-spread-tests/309/console
    None: https://jenkins.canonical.com/system-enablement/job/generic-update-snap-mp/484/console

Click here to trigger a rebuild:
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/576/rebuild

review: Needs Fixing (continuous-integration)

[Konrad Zapałowicz (kzapalowicz)]

lgt

review: Approve (code)

[Simon Fels (morphis)]

Merging on my own until Matteo is back.

review: Approve

diff --git a/cmd/client/cmd_wizard.go b/cmd/client/cmd_wizard.go
index 446a56c..a8b9bb2 100644
--- a/cmd/client/cmd_wizard.go
+++ b/cmd/client/cmd_wizard.go
@@ -21,7 +21,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"log"
-	"math"
 	"net"
 	"net/http"
 	"os"
@@ -300,7 +299,10 @@ var allSteps = [...]wizardStep{
 			defer procNetRoute.Close()
 
 			var iface string
-			minMetric := math.MaxUint32
+			// Using something like math.MaxUint32 causes an overflow on
+			// some architectures so lets use just a high enough value
+			// for typical systems here.
+			minMetric := 100000
 
 			scanner := bufio.NewScanner(procNetRoute)
 			// Skip the first line with table header