New fix for Rust

Fixes #1817 #1813
Tested Working on Debian 9; cannot be worst than nothing for other distro.

lgsm/functions/fix_rust.sh

@@ -8,4 +8,4 @@ local commandname="FIX"
 local commandaction="Fix"
 
 # Fixes: [Raknet] Server Shutting Down (Shutting Down)
-export LD_LIBRARY_PATH="${systemdir}/RustDedicated_Data/Plugins/x86_64"
+export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${systemdir}/RustDedicated_Data/Plugins/x86_64"