ota: log failures to remove temporary state when recovering frome errors

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

ota/state.go

@@ -144,7 +144,10 @@ func SaveState(state *SystemState, name string) (err error) {
 
 		// Remove the temporary if we have not renamed it yet.
 		if !renamed {
-			_ = os.Remove(f.Name())
+			e2 := os.Remove(f.Name())
+			if e2 != nil {
+				_, _ = fmt.Fprintf(os.Stderr, "%v", e2)
+			}
 		}
 	}()