scripts/get_waf.sh: bump waf to 1.9.12 (see #114)

diff --git a/scripts/get_waf.sh b/scripts/get_waf.sh
index 74b1b05..a6122f4 100755 (executable)
--- a/scripts/get_waf.sh
+++ b/scripts/get_waf.sh
@@ -3,7 +3,7 @@
 set -e
 set -x
 
-WAFURL=https://waf.io/waf-1.9.11
+WAFURL=https://waf.io/waf-1.9.12
 
 ( which wget > /dev/null && wget -qO waf $WAFURL ) || ( which curl > /dev/null && curl $WAFURL > waf )