Replace virSecretFree with virObjectUnref

Since virSecretFree will call virObjectUnref anyway, let's just use that
directly so as to avoid the possibility that we inadvertently clear out
a pending error message when using the public API.

cfg.mk

@@ -992,7 +992,7 @@ sc_prohibit_system_error_with_vir_err:
 # functions. There's a corresponding exclude to allow usage within tests,
 # docs, examples, tools, src/libvirt-*.c, and include/libvirt/libvirt-*.h
 sc_prohibit_virXXXFree:
-	@prohibit='\bvir(Domain|Network|NodeDevice|StorageVol|StoragePool|Stream)Free\b'	\
+	@prohibit='\bvir(Domain|Network|NodeDevice|StorageVol|StoragePool|Stream|Secret)Free\b'	\
 	exclude='sc_prohibit_virXXXFree' \
 	halt='avoid using 'virXXXFree', use 'virObjectUnref' instead' \
 	  $(_sc_search_regexp)
@@ -1186,4 +1186,4 @@ exclude_file_name_regexp--sc_prohibit_devname = \
   ^(tools/virsh.pod|cfg.mk|docs/.*)$$
 
 exclude_file_name_regexp--sc_prohibit_virXXXFree = \
-  ^(docs/|tests/|examples/|tools/|cfg.mk|src/test/test_driver.c|src/libvirt_public.syms|include/libvirt/libvirt-(domain|network|nodedev|storage|stream).h|src/libvirt-(domain|qemu|network|nodedev|storage|stream).c$$)
+  ^(docs/|tests/|examples/|tools/|cfg.mk|src/test/test_driver.c|src/libvirt_public.syms|include/libvirt/libvirt-(domain|network|nodedev|storage|stream|secret).h|src/libvirt-(domain|qemu|network|nodedev|storage|stream|secret).c$$)

daemon/remote.c

@@ -3565,8 +3565,7 @@ remoteDispatchSecretGetValue(virNetServerPtr server ATTRIBUTE_UNUSED,
  cleanup:
     if (rv < 0)
         virNetMessageSaveError(rerr);
-    if (secret)
-        virSecretFree(secret);
+    virObjectUnref(secret);
     return rv;
 }
 
@@ -5024,7 +5023,7 @@ remoteDispatchConnectListAllSecrets(virNetServerPtr server ATTRIBUTE_UNUSED,
         virNetMessageSaveError(rerr);
     if (secrets && nsecrets > 0) {
         for (i = 0; i < nsecrets; i++)
-            virSecretFree(secrets[i]);
+            virObjectUnref(secrets[i]);
         VIR_FREE(secrets);
     }
     return rv;

src/remote/remote_driver.c

@@ -3518,8 +3518,7 @@ remoteConnectListAllSecrets(virConnectPtr conn,
  cleanup:
     if (tmp_secrets) {
         for (i = 0; i < ret.secrets.secrets_len; i++)
-            if (tmp_secrets[i])
-                virSecretFree(tmp_secrets[i]);
+            virObjectUnref(tmp_secrets[i]);
         VIR_FREE(tmp_secrets);
     }
 

src/secret/secret_driver.c

@@ -700,10 +700,8 @@ secretConnectListAllSecrets(virConnectPtr conn,
  cleanup:
     secretDriverUnlock(driver);
     if (tmp_secrets) {
-        for (i = 0; i < ret_nsecrets; i ++) {
-            if (tmp_secrets[i])
-                virSecretFree(tmp_secrets[i]);
-        }
+        for (i = 0; i < ret_nsecrets; i ++)
+            virObjectUnref(tmp_secrets[i]);
     }
     VIR_FREE(tmp_secrets);
 

src/storage/storage_backend.c

@@ -506,7 +506,7 @@ virStorageGenerateSecretUUID(virConnectPtr conn,
         if (tmp == NULL)
             return 0;
 
-        virSecretFree(tmp);
+        virObjectUnref(tmp);
     }
 
     virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -589,7 +589,7 @@ virStorageGenerateQcowEncryption(virConnectPtr conn,
         if (ret != 0 &&
             conn->secretDriver->secretUndefine != NULL)
             conn->secretDriver->secretUndefine(secret);
-        virSecretFree(secret);
+        virObjectUnref(secret);
     }
     virBufferFreeAndReset(&buf);
     virSecretDefFree(def);

src/storage/storage_backend_fs.c

@@ -1201,7 +1201,7 @@ virStorageBackendFileSystemVolRefresh(virConnectPtr conn,
             if (VIR_ALLOC_N(vol->target.encryption->secrets, 1) < 0 ||
                 VIR_ALLOC(encsec) < 0) {
                 VIR_FREE(vol->target.encryption->secrets);
-                virSecretFree(sec);
+                virObjectUnref(sec);
                 return -1;
             }
 
@@ -1210,7 +1210,7 @@ virStorageBackendFileSystemVolRefresh(virConnectPtr conn,
 
             encsec->type = VIR_STORAGE_ENCRYPTION_SECRET_TYPE_PASSPHRASE;
             virSecretGetUUID(sec, encsec->uuid);
-            virSecretFree(sec);
+            virObjectUnref(sec);
         }
     }
 

src/storage/storage_backend_rbd.c

@@ -225,8 +225,7 @@ static int virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr,
     VIR_FREE(secret_value);
     VIR_FREE(rados_key);
 
-    if (secret != NULL)
-        virSecretFree(secret);
+    virObjectUnref(secret);
 
     virBufferFreeAndReset(&mon_host);
     VIR_FREE(mon_buff);