Description:
------------
results differ from php-5.0.4 to php-5.0.5 for parse_url with  host and scheme replaced with host and path


Reproduce code:
---------------
example of problem
php-5.0.4:
print_r(parse_url('href="http://mysite.com'));
results:
url = Array[2]
--->host= mysite.com
--->scheme= href="http

php-5.0.5:
print_r(parse_url('href="http://mysite.com'));
results:
url = Array[2]
--->host= href="http
--->path= //mysite.com

Expected result:
----------------
the returned result should not change between versions the correct return should be
url = Array[2]
--->host= mysite.com
--->scheme= href="http

Actual result:
--------------
the incorrect result
url = Array[2]
--->host= href="http
--->path= //mysite.com