Trim last slash when pruning paths

The check for unit tests looks for directories to exclude, and
removes the first slash. The purpose of this removal is to trim the
slash at the end of a path, as output by git ls-files, because paths
with a trailing slash don't match when used in find's -path check.
The current code works as long as the directories being removed are at
the top level; if not, a slash in the middle is trimmed, and the path
would fail anyway (and find warns about this).

Trimming the last slash in all cases avoids the various issues here.

Signed-off-by: Stephen Kitt <[email protected]>

scripts/shared/unit_test.sh

@@ -7,7 +7,7 @@ source "${SCRIPTS_DIR}/lib/debug_functions"
 function _find() {
     declare -a excludes
     for entry in .git $(git ls-files -o -i --exclude-from=.gitignore --directory); do
-        test -f "$entry" || excludes+=(-path "./${entry/\/}" -prune -o)
+        test -f "$entry" || excludes+=(-path "./${entry/%\/}" -prune -o)
     done
 
     find . "${excludes[@]}" "$@" -printf "%h\0" | sort -z -u