Updated Makefile: minor fix in deps target

Change-Id: I87bb940064e8fd0a9104a742c4d7c3521841dd17
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Makefile b/Makefile
index e4e8fef..a1cffb0 100644
--- a/Makefile
+++ b/Makefile
@@ -101,7 +101,7 @@
 	$(Q)sudo -H python3 -m pip install -U pyang pyangbind stdeb
 	$(Q)sudo -H python2 -m pip install -U pyang pyangbind stdeb
 	$(Q)mkdir -p ~/.m2
-	$(Q)cp -n ~/.m2/settings.xml{,.orig} ; wget -q -O - https://raw.githubusercontent.com/opendaylight/odlparent/master/settings.xml > ~/.m2/settings.xml
+	$(Q)cp -n ~/.m2/settings.xml ~/.m2/settings.xml.orig ; wget -q -O - https://raw.githubusercontent.com/opendaylight/odlparent/master/settings.xml > ~/.m2/settings.xml
 
 clean:
 	$(Q)rm -rf dist osm_im.egg-info deb deb_dist *.gz osm-imdocs* yang2swagger $(TREES_DIR)