[libvirt] [PATCH 10/10] tools: Use consistent error preservation and restoration calls

[John Ferlan]

Provide some consistency over error message variable name and usage
when saving error messages across possible other errors or possibility
of resetting of the last error.

Instead of virSaveLastError paired up with virSetError and virFreeError,
we should use the newer virErrorPreserveLast and virRestoreError.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 tools/virsh.c      | 7 ++-----
 tools/virt-admin.c | 7 ++-----
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index 4aae877160..a3553ddd36 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -93,7 +93,7 @@ virshCatchDisconnect(virConnectPtr conn,
         virErrorPtr error;
         char *uri;
 
-        error = virSaveLastError();
+        virErrorPreserveLast(&error);
         uri = virConnectGetURI(conn);
 
         switch ((virConnectCloseReason) reason) {
@@ -114,10 +114,7 @@ virshCatchDisconnect(virConnectPtr conn,
         vshError(ctl, _(str), NULLSTR(uri));
         VIR_FREE(uri);
 
-        if (error) {
-            virSetError(error);
-            virFreeError(error);
-        }
+        virErrorRestore(&error);
         disconnected++;
         vshEventDone(ctl);
     }
diff --git a/tools/virt-admin.c b/tools/virt-admin.c
index c0cc0999cb..a820e7241d 100644
--- a/tools/virt-admin.c
+++ b/tools/virt-admin.c
@@ -124,7 +124,7 @@ vshAdmCatchDisconnect(virAdmConnectPtr conn G_GNUC_UNUSED,
     if (reason == VIR_CONNECT_CLOSE_REASON_CLIENT)
         return;
 
-    error = virSaveLastError();
+    virErrorPreserveLast(&error);
     uri = virAdmConnectGetURI(conn);
 
     switch ((virConnectCloseReason) reason) {
@@ -146,10 +146,7 @@ vshAdmCatchDisconnect(virAdmConnectPtr conn G_GNUC_UNUSED,
     vshError(ctl, _(str), NULLSTR(uri));
     VIR_FREE(uri);
 
-    if (error) {
-        virSetError(error);
-        virFreeError(error);
-    }
+    virErrorRestore(&error);
 }
 
 static int
-- 
2.20.1