bugs: require api_key earlier

The previous location for the check was after it being used in::

    d.scan_existing_bugs(options.api_key)

By moving the check before, we can better notify the user about the
missing API key and avoid weird requests failures.

Resolves: #217
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

src/pkgdev/scripts/pkgdev_bugs.py

@@ -764,6 +764,10 @@ def _load_from_stdin(out: Formatter):
 
 @bugs.bind_main_func
 def main(options, out: Formatter, err: Formatter):
+    if options.api_key is None:
+        err.write(out.fg("red"), "No API key provided, exiting", out.reset)
+        return 1
+
     search_repo = options.search_repo
     options.targets = options.targets or []
     d = DependencyGraph(out, err, options)
@@ -823,10 +827,6 @@ def main(options, out: Formatter, err: Formatter):
     ):
         return 1
 
-    if options.api_key is None:
-        err.write(out.fg("red"), "No API key provided, exiting", out.reset)
-        return 1
-
     disabled, enabled = options.auto_cc_arches
     blocks = list(frozenset(map(int, options.blocks)))
     d.file_bugs(options.api_key, frozenset(enabled).difference(disabled), blocks)