[mpr] Fix infinite loop in wnetInit; fixes bug 6002

[Dan Kegel]

See http://bugs.winehq.org/show_bug.cgi?id=6002

Installing Lotus Notes 7 appends ",npnotes" to
System\\CurrentControlSet\\Control\\NetworkProvider\\Order\\ProviderOrder
This tickled a bug in wine's mpr.dll which caused any app that tried
to use wininet.dll to hang.  The last message from +all from the hung app is
0009:trace:mpr:wnetInit provider order is L",npnotes"
Turns out the code in mrp.dll that processes that comma-separated list was buggy
in two places; I don't think it ever found the second provider in the list.
Here's a quick fix; I'm not familiar with mpr, so I don't know if it's complete,
but it does get me past the problem, and it does cause the second provider to
be noticed.

ChangeLog
  mpr: fix bug in ProviderOrder comma processing in wnetInit()

 wnet.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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