Cleaned up a couple of shell variables.

diff --git a/docs/contrib/build_nmh b/docs/contrib/build_nmh
index 7d46fe7..d8d2315 100755 (executable)
--- a/docs/contrib/build_nmh
+++ b/docs/contrib/build_nmh
@@ -279,12 +279,12 @@ if [ $status -eq 0 ]; then
   status=$?
 
   if [ $status -eq 0 ]; then
-    if [ "${TESTS_SHELL}"x = x ]; then
+    if [ "$TESTS_SHELL"x = x ]; then
       #### Bonus:  use heirloom shell to test, if available, and if
       #### TESTS_SHELL hadn't already been set.
       heirloom_shell=/usr/lib/heirloom/5bin/sh
-      if [ -x "${heirloom_shell}" ]; then
-        TESTS_SHELL="${heirloom_shell}"; export TESTS_SHELL
+      if [ -x "$heirloom_shell" ]; then
+        TESTS_SHELL="$heirloom_shell"; export TESTS_SHELL
       fi
    fi