fix: use ParseInt

Signed-off-by: Babak K. Shandiz <babakks@github.com>

Author: babakks

device/device_flow.go

@@ -207,7 +207,7 @@ func Wait(ctx context.Context, c httpClient, uri string, opts WaitOptions) (*api
 			// We should try to use that if provided. It's okay if we couldn't find
 			// it as we have already increased our interval as of the RFC spec.
 			if s := resp.Get("interval"); s != "" {
-				if v, err := strconv.ParseUint(s, 10, 64); err == nil && v > 0 {
+				if v, err := strconv.ParseInt(s, 10, 64); err == nil && v > 0 {
 					newInterval = time.Duration(v) * time.Second
 				}
 			}