Use g_strfeev instead of virStringFreeList

Both accept a NULL value gracefully and virStringFreeList
does not zero the pointer afterwards, so a straight replace
is safe.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>

src/cpu/cpu_arm.c

@@ -124,7 +124,7 @@ virCPUarmDataClear(virCPUarmData *data)
     if (!data)
         return;
 
-    virStringListFree(data->features);
+    g_strfreev(data->features);
 }
 
 static void

src/cpu/cpu_ppc64.c

@@ -801,7 +801,7 @@ virCPUppc64DriverGetModels(char ***models)
 
  error:
     if (models) {
-        virStringListFree(*models);
+        g_strfreev(*models);
         *models = NULL;
     }
     goto cleanup;