[telepathy-gabble/master] Only make clean in wocky if needed

[Sjoerd Simons]

---
 lib/ext/Makefile.am |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/ext/Makefile.am b/lib/ext/Makefile.am
index 72d717c..e34518c 100644
--- a/lib/ext/Makefile.am
+++ b/lib/ext/Makefile.am
@@ -5,5 +5,6 @@ all-local:
 	cd wocky && $(MAKE)
 
 clean-local:
-	cd wocky && $(MAKE) clean
-
+	if test -e wocky/Makefile ; then \
+		cd wocky && $(MAKE) clean ; \
+	fi
-- 
1.5.6.5