merge: use return value of resolve_ref() to determine if HEAD is invalid

diff --git a/t/lib-patch-mode.sh b/t/lib-patch-mode.sh
index 375e2486511656df4294f0a4b750fd8d3f16d273..06c3c9176207af6c27c924377f29cc2bd0c881e5 100644 (file)
--- a/t/lib-patch-mode.sh
+++ b/t/lib-patch-mode.sh
@@ -2,11 +2,6 @@
 
 . ./test-lib.sh
 
-if ! test_have_prereq PERL; then
-       skip_all='skipping --patch tests, perl not available'
-       test_done
-fi
-
 set_state () {
        echo "$3" > "$1" &&
        git add "$1" &&