move decrement to start of loop

Author: celestialorb

bazelisk.py

@@ -340,6 +340,7 @@ def download_bazel_into_directory(version, is_commit, directory):
 
 def download(url, destination_path, retries=5, wait_seconds=5):
     while retries > 0:
+        retries -= 1
         try:
             sys.stderr.write("Downloading {}...\n".format(url))
             request = Request(url)
@@ -358,7 +359,6 @@ def download(url, destination_path, retries=5, wait_seconds=5):
                     shutil.copyfileobj(response, file)
                     return
         except Exception:
-            retries -= 1
             if retries <= 0:
                 raise
             time.sleep(wait_seconds)