[libxslt] autotools: Fix Python tests in VPATH builds

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 5e38ecc864623f933a2ee84c6a439122eb2435db
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Tue Sep 6 15:27:24 2022 +0200

    autotools: Fix Python tests in VPATH builds

 python/tests/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/python/tests/Makefile.am b/python/tests/Makefile.am
index 64b4ec5c..9239d1dc 100644
--- a/python/tests/Makefile.am
+++ b/python/tests/Makefile.am
@@ -21,7 +21,7 @@ tests: $(TESTSPY)
           fi; \
          for test in $(TESTSPY) ; do \
            echo "-- $$test" ; \
-           (cd $(srcdir) && $(PYTHON) $$test ) || exit 1; \
+           $(PYTHON) $(srcdir)/$$test; \
          done)
 else
 tests: