[libvirt] [PATCH 01/10] conf: 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>
---
 src/conf/domain_conf.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 10d6bf0eea..188ea80c3d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -23624,17 +23624,14 @@ virDomainDefCheckABIStabilityFlags(virDomainDefPtr src,
     return true;
 
  error:
-    err = virSaveLastError();
+    virErrorPreserveLast(&err);
 
     strSrc = virDomainDefFormat(src, NULL, 0);
     strDst = virDomainDefFormat(dst, NULL, 0);
     VIR_DEBUG("XMLs that failed stability check were: src=\"%s\", dst=\"%s\"",
               NULLSTR(strSrc), NULLSTR(strDst));
 
-    if (err) {
-        virSetError(err);
-        virFreeError(err);
-    }
+    virErrorRestore(&err);
     return false;
 }
 
-- 
2.20.1