Fix uninitialised variable cmd in custom_subdomain_tools

[cpandya2909]

custom tool for subdomain scanning is failing as it is failing to find {TARGET} in the run command even if it is properly defined in the web portal.

checking the logs showed that line

if '{TARGET}' not in cmd:

failed as cmd was None.

cmd is used here to check required values but it is defined after this check.

			if '{TARGET}' not in cmd:
				logger.error(f'Missing {{TARGET}} placeholders in {tool} configuration. Skipping.')
				continue
			if '{OUTPUT}' not in cmd:
				logger.error(f'Missing {{OUTPUT}} placeholders in {tool} configuration. Skipping.')
				continue

			custom_tool = tool_query.first()
			cmd = custom_tool.subdomain_gathering_command
			cmd = cmd.replace('{TARGET}', host)

Thus, fixing the cmd variable initialisation.

[yogeshojha]

Thank you for sending the fix @cpandya2909 🚀