Update before_script.msvc.sh

CI/before_script.msvc.sh

@@ -422,8 +422,8 @@ fi
 			printf "Exists. "
 		elif [ -z $SKIP_EXTRACT ]; then
 			rm -rf Boost
-			[ -n "$CI" ] CI_EXTRA_INNO_OPTIONS="//SUPPRESSMSGBOXES //LOG="boost_install.log"
-			"${DEPS}/boost-1.67.0-msvc${MSVC_YEAR}-win${BITS}.exe" //DIR="${CWD_DRIVE_ROOT}Boost_temp" //VERYSILENT //NORESTART ${CI_EXTRA_INNO_OPTIONS}	
+			[ -n "$CI" ] CI_EXTRA_INNO_OPTIONS="//SUPPRESSMSGBOXES //LOG='boost_install.log'"
+			"${DEPS}/boost-1.67.0-msvc${MSVC_YEAR}-win${BITS}.exe" //DIR="${CWD_DRIVE_ROOT}Boost_temp" //VERYSILENT //NORESTART ${CI_EXTRA_INNO_OPTIONS}
 			mv "${CWD_DRIVE_ROOT}Boost_temp" "${BOOST_SDK}"
 		fi
 		add_cmake_opts -DBOOST_ROOT="$BOOST_SDK" \