[dia] make distcheck passes recent test addtions

[Hans Breuer <hans src gnome org>]

commit e408f3c136296031ef1f4cef1e648bed66ca4b76
Author: Hans Breuer <hans breuer org>
Date:   Sat Jul 21 19:58:51 2012 +0200

    make distcheck passes recent test addtions

 tests/Makefile.am |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 2df6b1f..47bb6d4 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -10,8 +10,8 @@ tests:
 #	@test -z "${TEST_PROGS}" || ${GTESTER} --verbose ${TEST_PROGS}
 
 test: $(TEST_PROGS)
-	../app/run_dia.sh ../samples/render-test.dia --export=rt.shape && \
-	xmllint --dtdvalid ../doc/shape.dtd rt.shape
+	../app/run_dia.sh $(top_srcdir)/samples/render-test.dia --export=rt.shape && \
+	xmllint --dtdvalid $(top_srcdir)/doc/shape.dtd rt.shape && rm rt.shape && rm rt.png
 	./objects ../objects//