tests: initialize a variable

* tests/rm/interactive-once.sh (write_prot_msg1): Initialize it,
so an envvar setting cannot perturb the test.

diff --git a/tests/rm/interactive-once.sh b/tests/rm/interactive-once.sh
index ef97e0a336be91a51b796b8c521f9a0f71d1f7ea..54b288fa2c6ebd75b68655d82dce2fb9715133b2 100755 (executable)
--- a/tests/rm/interactive-once.sh
+++ b/tests/rm/interactive-once.sh
@@ -35,6 +35,7 @@ rm -I file1-* < in-n >> out 2>> err || fail=1
 echo . >> err || framework_failure_
 test -f file1-1 && fail=1
 
+write_prot_msg1=
 echo 'one file, read only, answer no' >> err || framework_failure_
 if ls /dev/stdin >/dev/null 2>&1; then
   touch file1-1 || framework_failure_