fix issue with $TMPDIR

.zsh.d/zshrc

@@ -59,6 +59,9 @@ if [ "$SUDO_USER" -a $UID = 0 ]; then
     # ugly hack : reset some file perms to normal to avoid warnings
     chmod 0644 ~/.zcompdump
     chown $SUDO_USER:$SUDO_USER ~/.zcompdump
+
+    # unsetting TMPDIR when logged as root
+    [ -z "$TMPDIR" ] && unset TMPDIR
 fi
 
 # sourcing extra file