qemu-img: Avoid qerror_report_err() outside QMP handlers, again

qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.  Replace by error_report_err().

Commit 6936f29 cleaned that up in qemu-img.c, but two calls have crept
in since.  Take care of them the same way.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/qemu-img.c b/qemu-img.c
index 82d9078..9dddfbe 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -274,8 +274,7 @@
     if (filename) {
         proto_drv = bdrv_find_protocol(filename, true, &local_err);
         if (!proto_drv) {
-            qerror_report_err(local_err);
-            error_free(local_err);
+            error_report_err(local_err);
             qemu_opts_free(create_opts);
             return 1;
         }
@@ -1526,8 +1525,7 @@
 
     proto_drv = bdrv_find_protocol(out_filename, true, &local_err);
     if (!proto_drv) {
-        qerror_report_err(local_err);
-        error_free(local_err);
+        error_report_err(local_err);
         ret = -1;
         goto out;
     }