test suite: tstunt debchange: Use exec

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/tests/tstunt/debchange b/tests/tstunt/debchange
index e5ec4d8a3cf9e369e6048e0cef6fe95301c11617..452b8c96a190081bd8f5e0a3d24e0fd62e05d3e2 100755 (executable)
--- a/tests/tstunt/debchange
+++ b/tests/tstunt/debchange
@@ -10,6 +10,7 @@ if ! test "$tz_set"; then tz_undef=-u; fi
 
 set -x
 
+exec \
 env TZ=UTC \
 faketime -f "$spec" \
 env $tz_undef TZ${tz_set:+=}"$TZ" \