Fix bin permissions

Author: burner1024

extra/env.sh

@@ -10,6 +10,7 @@ export WINEARCH=win32
 export WINEDEBUG=-all
 export mod_name=fo2tweaks
 export compile="$bin_dir/sslc"
+export dat3="$bin_dir/dat3"
 
 set +xeu +o pipefail
 

extra/prepare.sh

@@ -7,3 +7,4 @@ set -xeu -o pipefail
 wget -q "$sslc_url" -O "$compile"
 # shellcheck disable=2154
 wget -q "$dat3_url" -O "$dat3"
+chmod +x "$compile" "$dat3"