git: 780049741e88 - stable/13 - xen(4): Fix a common typo in a source code comments

The branch stable/13 has been updated by gbe (doc committer):

URL: https://cgit.FreeBSD.org/src/commit/?id=780049741e88653098bf6752f59bb8b1a095f5e9

commit 780049741e88653098bf6752f59bb8b1a095f5e9
Author:     Gordon Bergling <gbe@FreeBSD.org>
AuthorDate: 2022-02-06 12:44:49 +0000
Commit:     Gordon Bergling <gbe@FreeBSD.org>
CommitDate: 2022-02-09 06:20:31 +0000

    xen(4): Fix a common typo in a source code comments
    
    - s/existance/existence/
    
    (cherry picked from commit bc9432d0e701ad1fc982d7766be282df3cbe5417)
---
 sys/xen/xenbus/xenbusb.c       | 2 +-
 sys/xen/xenbus/xenbusb_back.c  | 2 +-
 sys/xen/xenbus/xenbusb_front.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/xen/xenbus/xenbusb.c b/sys/xen/xenbus/xenbusb.c
index 3e49dfd9424c..457d396c8f98 100644
--- a/sys/xen/xenbus/xenbusb.c
+++ b/sys/xen/xenbus/xenbusb.c
@@ -428,7 +428,7 @@ xenbusb_release_confighook(struct xenbusb_softc *xbs)
 }
 
 /**
- * \brief Verify the existance of attached device instances and perform
+ * \brief Verify the existence of attached device instances and perform
  *        probe/attach processing for newly arrived devices.
  *
  * \param dev  The NewBus device representing this XenBus bus.
diff --git a/sys/xen/xenbus/xenbusb_back.c b/sys/xen/xenbus/xenbusb_back.c
index 9beb1f6cdae1..94bc0e73fab9 100644
--- a/sys/xen/xenbus/xenbusb_back.c
+++ b/sys/xen/xenbus/xenbusb_back.c
@@ -60,7 +60,7 @@ __FBSDID("$FreeBSD$");
 
 /*------------------ Private Device Attachment Functions  --------------------*/
 /**
- * \brief Probe for the existance of the XenBus back bus.
+ * \brief Probe for the existence of the XenBus back bus.
  *
  * \param dev  NewBus device_t for this XenBus back bus instance.
  *
diff --git a/sys/xen/xenbus/xenbusb_front.c b/sys/xen/xenbus/xenbusb_front.c
index 961539b07c30..7cb5bc33d1e7 100644
--- a/sys/xen/xenbus/xenbusb_front.c
+++ b/sys/xen/xenbus/xenbusb_front.c
@@ -60,7 +60,7 @@ __FBSDID("$FreeBSD$");
 
 /*------------------ Private Device Attachment Functions  --------------------*/
 /**
- * \brief Probe for the existance of the XenBus front bus.
+ * \brief Probe for the existence of the XenBus front bus.
  *
  * \param dev  NewBus device_t for this XenBus front bus instance.
  *