hctltest1.py: Skip read/write if no values in element

Closes: https://github.com/alsa-project/alsa-python/pull/14
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/test/hctltest1.py b/test/hctltest1.py
index 9962af6681a8388341bd4aea8612ccdf7a86d707..88b9dfb3a882b9aaf747fd5fa57a554010a2fb39 100755 (executable)
--- a/test/hctltest1.py
+++ b/test/hctltest1.py
@@ -32,6 +32,8 @@ def value(element):
                if a.startswith('__'):
                        continue
                print('  %s: %s' % (a, getattr(value, a)))
+       if info.count == 0:
+               return
        values = value.get_tuple(info.type, info.count)
        print('  Values:', values)
        value.set_tuple(info.type, values)