secur32: invert error handling conditions in order to decrease indentation in secur32/wrapper.c.

[Yuval Fledel]

The attached patch invert if conditions in secur32/wrapper.c.

When an error is detected and no cleanup is required, the function
will return immediately, saving the need to keep the result value and
to open a new block. Usually 2-3 indentation levels are removed in
each function.

The patch will make the code smaller without any functionality change
- the patch is a no-op.

Each diff chunk is independent, which should ease reviewing.

 wrapper.c | 1252 ++++++++++++++++++++++++++------------------------------------
 1 file changed, 545 insertions(+), 707 deletions(-)

Changelog:
    secur32: invert error handling conditions in order to decrease
indentation in secur32/wrapper.c.
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