[Libguestfs] [PATCH 2/2] v2v: rhv-upload-plugin: Fix error formatting

[Nir Soffer]

Fix the error format so we actually format the arguments instead of
raising the format string and the arguments.

Here is an upload error formatted correctly with this change:

nbdkit: python[1]: error: /home/nsoffer/src/libguestfs/tmp/v2v.eC5yCl/rhv-upload-plugin.py:
pwrite: error: could not write sector offset 218911744 size 3584: 403 Forbidden:
b'{"explanation": "Access was denied to this resource.", "code": 403, "detail":
"Ticket u\'61ac0483-48e3-4984-84d6-438884ba8bb2\' expired", "title": "Forbidden"}'
---
 v2v/rhv-upload-plugin.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/v2v/rhv-upload-plugin.py b/v2v/rhv-upload-plugin.py
index 7327ea4c5..b5dd5521d 100644
--- a/v2v/rhv-upload-plugin.py
+++ b/v2v/rhv-upload-plugin.py
@@ -317,7 +317,7 @@ def request_failed(h, r, msg):
     debug(body)
 
     # Only a short error is included in the exception.
-    raise RuntimeError("%s: %d %s: %r", msg, status, reason, body[:200])
+    raise RuntimeError("%s: %d %s: %r" % (msg, status, reason, body[:200]))
 
 # For documentation see:
 # https://github.com/oVirt/ovirt-imageio/blob/master/docs/random-io.md
-- 
2.17.1