[MINOR] Makefile: git-log may return multiple dates in case of merges.
diff --git a/Makefile b/Makefile
index 906e8ee..195e6a9 100644
--- a/Makefile
+++ b/Makefile
@@ -103,7 +103,7 @@
ifneq ($(VERSION),)
# OK git is there and works.
SUBVERS := $(shell comms=$$(git-log --no-merges v$(VERSION).. 2>/dev/null |grep -c ^commit ); [ $$comms -gt 0 ] && echo "-$$comms" )
-VERDATE := $(shell date +%Y/%m/%d -d "$$(git-log HEAD^.. 2>/dev/null | grep ^Date: | cut -f2- -d: | cut -f1 -d+)" )
+VERDATE := $(shell date +%Y/%m/%d -d "$$(git-log HEAD^.. 2>/dev/null | grep -m 1 ^Date: | cut -f2- -d: | cut -f1 -d+)" )
else
# Otherwise, use the hard-coded version of last tag, number of changes
# since last tag, and release date.