emp-sh-functions: set TMPDIR if missed

bin/epm-sh-functions

@@ -690,11 +690,12 @@ set_distro_info()
     DISTRCONTROL="$($DISTRVENDOR -y)"
     [ -n "$BASEDISTRNAME" ] || BASEDISTRNAME=$($DISTRVENDOR -s)
 
+    [ -n "$TMPDIR" ] || TMPDIR="/tmp"
     # TODO: improve BIGTMPDIR conception
     # https://bugzilla.mozilla.org/show_bug.cgi?id=69938
     # https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch05s15.html
     # https://geekpeach.net/ru/%D0%BA%D0%B0%D0%BA-systemd-tmpfiles-%D0%BE%D1%87%D0%B8%D1%89%D0%B0%D0%B5%D1%82-tmp-%D0%B8%D0%BB%D0%B8-var-tmp-%D0%B7%D0%B0%D0%BC%D0%B5%D0%BD%D0%B0-tmpwatch-%D0%B2-centos-rhel-7
-    [ -n "$BIGTMPDIR" ] || [ -d "/var/tmp" ] && BIGTMPDIR="/var/tmp" || BIGTMPDIR="/tmp"
+    [ -n "$BIGTMPDIR" ] || [ -d "/var/tmp" ] && BIGTMPDIR="/var/tmp" || BIGTMPDIR="$TMPDIR"
 }
 
 # FIXME: detect if not recognized