Update obok.py

Changed MAC address fetching code to address possibile regression

Obok_plugin/obok/obok.py

@@ -471,6 +471,13 @@ class KoboLibrary(object):
         macaddrs = []
         if sys.platform.startswith('win'):
             c = re.compile('\s?(' + '[0-9a-f]{2}[:\-]' * 5 + '[0-9a-f]{2})(\s|$)', re.IGNORECASE)
+            try: 
+                output = subprocess.Popen('ipconfig /all', shell=True, stdout=subprocess.PIPE, text=True).stdout
+                for line in output:
+                    m = c.search(line)
+                    if m:
+                        macaddrs.append(re.sub("-", ":", m.group(1)).upper())
+            except:
                 output = subprocess.Popen('wmic nic where PhysicalAdapter=True get MACAddress', shell=True, stdout=subprocess.PIPE, text=True).stdout
                 for line in output:
                     m = c.search(line)