[libxslt] Allow REC tests with empty stdout

[Nick Wellnhofer <nwellnhof src gnome org>]

commit dc241451b9cdc2dc6b834c51d8a62c54a45ac783
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Fri Apr 29 17:42:28 2016 +0200

    Allow REC tests with empty stdout

 tests/REC/Makefile.am |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/tests/REC/Makefile.am b/tests/REC/Makefile.am
index fd06dd8..7ca6db7 100644
--- a/tests/REC/Makefile.am
+++ b/tests/REC/Makefile.am
@@ -103,7 +103,7 @@ test tests: $(top_builddir)/xsltproc/xsltproc
                        cp $$name.bad $(srcdir)/$$name.err ; \
                fi ; \
          else \
-               if  [ ! -s $$name.res ] ; then \
+               if  [ ! -f $$name.res ] ; then \
                        echo "Fatal error, no $$name.res\n" ; \
                else \
                        diff $(srcdir)/$$name.out $$name.res ; \
@@ -132,7 +132,7 @@ test tests: $(top_builddir)/xsltproc/xsltproc
                        cp $$name.bad $(srcdir)/$$name.stand.err ; \
                fi ; \
          else \
-               if  [ ! -s $$name.res ] ; then \
+               if  [ ! -f $$name.res ] ; then \
                        echo "Fatal error, no $$name.res\n" ; \
                else \
                        diff $(srcdir)/$$name.stand.out $$name.res ; \
@@ -165,7 +165,7 @@ test tests: $(top_builddir)/xsltproc/xsltproc
                        cp $$name.bad $(srcdir)/$$name.err ; \
                fi ; \
          else \
-               if  [ ! -s $$name.res ] ; then \
+               if  [ ! -f $$name.res ] ; then \
                        echo "Fatal error, no $$name.res\n" ; \
                else \
                        diff $(srcdir)/$$name.out $$name.res ; \
@@ -194,7 +194,7 @@ test tests: $(top_builddir)/xsltproc/xsltproc
                        cp $$name.bad $(srcdir)/$$name.stand.err ; \
                fi ; \
          else \
-               if  [ ! -s $$name.res ] ; then \
+               if  [ ! -f $$name.res ] ; then \
                        echo "Fatal error, no $$name.res\n" ; \
                else \
                        diff $(srcdir)/$$name.stand.out $$name.res ; \