Merge branch 'bg/maint-gitweb-test-lib' into maint

* bg/maint-gitweb-test-lib:
  t/gitweb-lib: Don't pass constant to decode_utf8

t/gitweb-lib.sh

@@ -80,7 +80,7 @@ if ! test_have_prereq PERL; then
 	test_done
 fi
 
-perl -MEncode -e 'decode_utf8("", Encode::FB_CROAK)' >/dev/null 2>&1 || {
+perl -MEncode -e '$e="";decode_utf8($e, Encode::FB_CROAK)' >/dev/null 2>&1 || {
     skip_all='skipping gitweb tests, perl version is too old'
     test_done
 }