MinGW: fix undefined _SH_DENYRW
MinGW: fix undefined _SH_DENYRW

Change-Id: I5c9535699182bb54dc9f5355c0d41fd42984dca8
Reviewed-by: Karsten Heimrich <81d67632fe4bf9afb88a400b41aa25e19a1d2a12@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw