Fixed findings

List of Findings

Error: SHELLCHECK_WARNING (CWE-477): [#def1]
/usr/bin/lesspipe.sh:125:19: warning[SC2166]: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
#  123|   		if [ -n "$conv" ]; then
#  124|   			env=`echo $LANG | cut -d. -f2`
#  125|-> 			if [ -n "$env" -a "$conv" != "$env" ]; then
#  126|   				iconv -f $conv -t $env "$1"
#  127|   				exit $?

Error: COMPILER_WARNING (CWE-457): [#def2]
less-679/decode.c: scope_hint: In function ‘cmd_decode’
less-679/decode.c:785:20: warning[-Wmaybe-uninitialized]: ‘mlen’ may be used uninitialized
#  785 |                 if (mlen >= match_len)
#      |                    ^
less-679/decode.c:783:24: note: ‘mlen’ was declared here
#  783 |                 size_t mlen;
#      |                        ^~~~
#  783|   		size_t mlen;
#  784|   		int taction = cmd_search(cmd, t->t_start, t->t_end, &tsp, &mlen);
#  785|-> 		if (mlen >= match_len)
#  786|   		{
#  787|   			match_len = mlen;

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