tools/nut-scanner/scan_snmp.c: cosmetic fixes, reconcile with DMF branch #264

Job	Run time
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, no)	4m 52s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-1.0)	5m 5s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-0.1)	5m 11s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, no)	5m 8s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-1.0)	5m 2s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-0.1)	5m 4s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, no)	4m 55s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-1.0)	4m 53s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-0.1)	5m 18s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, no)	4m 59s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-1.0)	5m 18s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-0.1)	5m 5s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, no)	4m 58s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-1.0)	5m 8s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-0.1)	5m 14s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, no)	5m 42s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-1.0)	5m 14s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-0.1)	6m 54s
Analyze (python, ubuntu-latest, PYTHON=python3, no, no)	2m 9s
	1h 36m 9s

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