t/t5000-tar-tree.sh: avoid "test <cond> -a/-o <cond>"

The construct is error-prone; "test" being built-in in most modern
shells, the reason to avoid "test <cond> && test <cond>" spawning
one extra process by using a single "test <cond> -a <cond>" no
longer exists.

Signed-off-by: Elia Pinto <[email protected]>
Reviewed-by: Matthieu Moy <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: devzero2000

t/t5000-tar-tree.sh

@@ -72,7 +72,7 @@ check_tar() {
 			for header in *.paxheader
 			do
 				data=${header%.paxheader}.data &&
-				if test -h $data -o -e $data
+				if test -h $data || test -e $data
 				then
 					path=$(get_pax_header $header path) &&
 					if test -n "$path"