Archive build script: stop when creating archive fails

The `subprocess.call()` function doesn't check the exit status code of the
subprocess. Use `subprocess.check_call()` or `subprocess.run()` instead.

build_files/package_spec/build_archive.py

@@ -61,7 +61,7 @@ try:
         sys.stderr.write('Unknown archive extension: ' + extension)
         sys.exit(-1)
 
-    subprocess.call(archive_cmd)
+    subprocess.check_call(archive_cmd, env=archive_env)
 except Exception as ex:
     sys.stderr.write('Failed to create package archive: ' + str(ex) + '\n')
     sys.exit(1)