MinGW-w64 Utils:: compilation fix
MinGW-w64 Utils:: compilation fix

The include for utils/environment.h was omitted
unless Q_OS_MSVC, but the code that uses it is
also compiled for MinGW-w64, so change that compile
guard to Q_OS_WIN instead.

Change-Id: I2fa5a09f1864c0ed38d09e3fbb2c6f661fbc8b26
Reviewed-by: Orgad Shaneh <2b010cbad792a0c0a8175f752f93f83941fc6bc1@gmail.com>

xianian/qt-creator,xianian/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator