[PATCH v2] msxml3: use XSD regex quantifier format S{0, m} instead of S{, m}

[Damjan Jovanovic]

S{,m} is invalid in libxml2 2.9.11 and later, and was never valid
in the XSD specification or any XML implementation tested. We
should only use S{0,m} for our internal XSD schema used in XDR validation.

Try 2 adds a test.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51358
Signed-off-by: Damjan Jovanovic <damjan.jov(a)gmail.com>
---
 dlls/msxml3/datatypes.xsd  | 4 ++--
 dlls/msxml3/tests/schema.c | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)