Christophe CURIS 6c3cd08dad wrlib: return NULL if XImage could not be taken, for consistency ...

To be consistent with RCreateXImage and because it should not be up to the
caller to handle this, when XGetImage returns a NULL pointer then the
function RGetXImage will also return NULL instead of an RXImage structure
with a NULL pointer.

This consistent behaviour helps fixing a memory leak in WMaker reported by
Coverity (#50125).

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

2014-06-15 19:45:20 +01:00

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