dohtml: fix DOCDESTTREE path join
When DOCDESTTREE begins with a leading slash, it caused os.path.join()
to misbehave since commit 3f67cb453ee1b74894c230459b43855db7fcc410.
diff --git a/bin/dohtml.py b/bin/dohtml.py
index 37d5b2e..500c523 100755
--- a/bin/dohtml.py
+++ b/bin/dohtml.py
@@ -77,7 +77,7 @@
desttree = "html"
destdir = os.path.join(options.ED, "usr", "share", "doc",
- options.PF.lstrip(os.sep), desttree,
+ options.PF.lstrip(os.sep), desttree.lstrip(os.sep),
options.doc_prefix.lstrip(os.sep), prefix).rstrip(os.sep)
if not os.path.exists(fullpath):
