[bluez/bluez] 0c757e: mesh: Fix check for active scan when using generic IO

[inga-s <noreply@xxxxxxxxxx>]

  Branch: refs/heads/master
  Home:   https://github.com/bluez/bluez
  Commit: 0c757e8eeef69ff2b1eefa59e590f171c9fe1c88
      https://github.com/bluez/bluez/commit/0c757e8eeef69ff2b1eefa59e590f171c9fe1c88
  Author: Inga Stotland <inga.stotland@xxxxxxxxx>
  Date:   2023-10-16 (Mon, 16 Oct 2023)

  Changed paths:
    M mesh/mesh-io-generic.c

  Log Message:
  -----------
  mesh: Fix check for active scan when using generic IO

This modifies the check for an active scan in generic IO:
the bug has been introduced during earlier code refactoring.

Fixes: https://github.com/bluez/bluez/issues/625