raise OSError with strerror message consistently
raise OSError with strerror message consistently

jncornett/libdnet,kbandla/libdnet,jncornett/libdnet,wtfbbqhax/libdnet,wtfbbqhax/libdnet,wtfbbqhax/libdnet,kbandla/libdnet,jncornett/libdnet,kbandla/libdnet