[3.0] e973102 Fix up dh_gencontrol call

[Tollef Fog Heen]

commit e97310204b02370e1952bf76e7f710962b720a32
Author: Tollef Fog Heen <tfheen at varnish-software.com>
Date:   Mon Dec 2 15:07:11 2013 +0100

    Fix up dh_gencontrol call

diff --git a/rules b/rules
index bb7fba4..115dddc 100755
--- a/rules
+++ b/rules
@@ -69,7 +69,7 @@ override_dh_gencontrol:
 	if [ -n "$$DEBIAN_OVERRIDE_BINARY_VERSION" ]; then \
 		dh_gencontrol -- -Tdebian/substvars -v$$DEBIAN_OVERRIDE_BINARY_VERSION; \
 	else \
-		dh_gencontrol -Tdebian/substvars; \
+		dh_gencontrol -- -Tdebian/substvars; \
 	fi
 
 # Override to add several init scripts