PR#1958: fix potentially undeclared variable error

Merges #1958
https://pagure.io/koji/pull-request/1958

Fixes: #1957
https://pagure.io/koji/issue/1957
unreferenced variable

koji/__init__.py

@@ -1676,8 +1676,8 @@ def openRemoteFile(relpath, topurl=None, topdir=None, tempdir=None):
     if topurl:
         url = "%s/%s" % (topurl, relpath)
         fo = tempfile.TemporaryFile(dir=tempdir)
+        resp = requests.get(url, stream=True)
         try:
-            resp = requests.get(url, stream=True)
             for chunk in resp.iter_content(chunk_size=8192):
                 fo.write(chunk)
         finally:

koji/tasks.py

@@ -478,8 +478,8 @@ class BaseTaskHandler(object):
                 return fn
             self.logger.debug("Downloading %s", relpath)
             url = "%s/%s" % (self.options.topurl, relpath)
+            resp = requests.get(url, stream=True)
             try:
-                resp = requests.get(url, stream=True)
                 if not os.path.exists(os.path.dirname(fn)):
                     os.makedirs(os.path.dirname(fn))
                 with open(fn, 'wb') as fdst: