regress: fix setup with new MAKEOPT argument

make "" gives me:
make: *** empty string invalid as file name.  Stop.

diff --git a/regress/scripts/setup b/regress/scripts/setup
index 7ca614c098d031f42488cf2586876e09d6c8e03e..3954298fa081bb1a47d6b41f2994557b22c2a2b8 100755 (executable)
--- a/regress/scripts/setup
+++ b/regress/scripts/setup
@@ -50,7 +50,7 @@ rm -f Makefile config.*
 check_exit_code
 # Cleanup any build in source
 make clean
-make ${MAKEOPT:-""}
+make $MAKEOPT
 check_exit_code
 make install
 if [ a$KEEP_SOURCE = a ]; then