Revert "vendor.sh: optimise find_me()"

This reverts commit fb7aaa78bb.

it caused a few issues. will re-do later

the old code isn't really broken, just inefficient, because
several files are scanned twice, but in practise the overhead
isn't that great

The error occurs sometimes, when bruteforcing me.bin:

ERROR ./mk: Unhandled error for: mv /home/user/lbmk/tmp/me.bin /home/user/lbmk/cache/tmpdl/check

This revert should fix the issue, for now.

include/init.sh

@@ -181,7 +181,7 @@ pybin()
 	[ $venv -gt 0 ] && for pypath in "/usr/local/bin" "/usr/bin"; do
 		[ -e "$pypath/$1" ] && [ ! -d "$pypath/$1" ] && \
 		    [ -x "$pypath/$1" ] && printf "%s/%s\n" "$pypath" "$1" && \
-		    return 0; :
+		    return 0
 	done && return 1
 
 	# Defer to normal command -v if not a venv