mingwin headers are a bit 'outdated'

.travis.yml

@@ -36,6 +36,8 @@ script:
   - if [ $ANDROID ]; then 
     ant -v -Dmy.dir=${TRAVIS_BUILD_DIR} -f ${TRAVIS_BUILD_DIR}/port/jassimp/build.xml ndk-jni ; 
     elif [ $WINDOWS -a $CC = "gcc" ]; then
+    sudo sh -c "wget http://source.winehq.org/git/wine.git/commitdiff_plain/86781a6a524fa336f893ffd0a87373ffd306913c?hp=076edfe9d4b6cd39b6cf41b9f1d3e18688cc8673 -O - | patch -p 1 -d /usr/x86_64-w64-mingw32" ;
+    sudo sh -c "wget https://www.winehq.org/pipermail/wine-patches/2012-February/111438.html -O - | patch -p 1 -d /usr/x86_64-w64-mingw32" ;
     cmake -G "Unix Makefiles" -DASSIMP_NO_EXPORT=$TRAVIS_NO_EXPORT -DBUILD_SHARED_LIBS=$SHARED_BUILD -DCMAKE_TOOLCHAIN_FILE=cmake-modules/MinGW_x86_64.cmake ;
     cmake --build . ;
     make install ;