QRegExp: fix autotest, fix usage of uninitialized values

A (probable) typo was causing the code dealing with anchors
to use uninitialized values. This used to work by chance, but was
indeed detected by Valgrind f.i. when running tst_qregexp --
the indexIn test on anc11 data reported:

    ==3015== Conditional jump or move depends on uninitialised value(s)
    ==3015== at 0x514B4EA: PeppeQt::QRegExpMatchState::testAnchor(int, int, int const*) (qregexp.cpp:1813)
    [...]
    ==3015== Uninitialised value was created by a stack allocation
    ==3015== at 0x514B3EB: PeppeQt::QRegExpMatchState::testAnchor(int, int, int const*) (qregexp.cpp:1803)

Fixing the code also makes the aforementioned test to succeed,
therefore the #if 0 sections can be droppped.

Backport of commits 281771ee201e591d4f40a161b93c71914b1b38f2
and 1fe7e557d75962c9c79cc344037a02ed50369430 from qtbase.

Change-Id: I4d6cffdae737def1a47e72b46e40979e0aee1719
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/tools/qregexp.cpp b/src/corelib/tools/qregexp.cpp
index 4053028..188cdb5 100644
--- a/src/corelib/tools/qregexp.cpp
+++ b/src/corelib/tools/qregexp.cpp
@@ -1839,7 +1839,7 @@ bool QRegExpMatchState::testAnchor(int i, int a, const int *capBegin)
                 QRegExpMatchState matchState;
                 matchState.prepareForMatch(ahead[j]->eng);
                 matchState.match(in + pos + i, len - pos - i, 0,
-                    true, true, matchState.caretPos - matchState.pos - i);
+                    true, true, caretPos - pos - i);
                 if ((matchState.captured[0] == 0) == ahead[j]->neg)
                     return false;
             }