qemu: Make qemuMigrationParamsFree follow common pattern

Our *Free functions usually do not take a double pointer and the caller
has to make sure it doesn't use the stale pointer after the *Free
function returns.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/qemu/qemu_driver.c

@@ -12759,7 +12759,7 @@ qemuDomainMigratePerform3Params(virDomainPtr dom,
                                   flags, dname, bandwidth, true);
  cleanup:
     VIR_FREE(compression);
-    qemuMigrationParamsFree(&migParams);
+    qemuMigrationParamsFree(migParams);
     VIR_FREE(migrate_disks);
     return ret;
 }

src/qemu/qemu_migration_params.c

@@ -50,13 +50,13 @@ qemuMigrationParamsClear(qemuMonitorMigrationParamsPtr migParams)
 
 
 void
-qemuMigrationParamsFree(qemuMonitorMigrationParamsPtr *migParams)
+qemuMigrationParamsFree(qemuMonitorMigrationParamsPtr migParams)
 {
-    if (!*migParams)
+    if (!migParams)
         return;
 
-    qemuMigrationParamsClear(*migParams);
-    VIR_FREE(*migParams);
+    qemuMigrationParamsClear(migParams);
+    VIR_FREE(migParams);
 }
 
 
@@ -101,7 +101,7 @@ qemuMigrationParamsFromFlags(virTypedParameterPtr params,
     return migParams;
 
  error:
-    qemuMigrationParamsFree(&migParams);
+    qemuMigrationParamsFree(migParams);
     return NULL;
 }
 

src/qemu/qemu_migration_params.h

@@ -37,7 +37,7 @@ void
 qemuMigrationParamsClear(qemuMonitorMigrationParamsPtr migParams);
 
 void
-qemuMigrationParamsFree(qemuMonitorMigrationParamsPtr *migParams);
+qemuMigrationParamsFree(qemuMonitorMigrationParamsPtr migParams);
 
 int
 qemuMigrationParamsSet(virQEMUDriverPtr driver,