osmo-release.sh: Fix coloring output under bash

Change-Id: Ib9e33ec8650ad8bc2e4b1893d9a7195c041c52dc
---
M osmo-release.sh
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/osmo-release.sh b/osmo-release.sh
index 5a9584c..117071e 100755
--- a/osmo-release.sh
+++ b/osmo-release.sh
@@ -36,15 +36,15 @@
 YELLOW="\033[1;33m"
 
 ok() {
-	echo "${GREEN}OK:${RESET} $@"
+	printf "${GREEN}OK:${RESET} %s\n" "$1"
 }
 
 warn() {
-	echo "${YELLOW}WARN:${RESET} $@"
+	printf "${YELLOW}WARN:${RESET} %s\n" "$1"
 }
 
 error() {
-	echo "${RED}ERROR:${RESET} $@"
+	printf "${RED}ERROR:${RESET} %s\n" "$1"
 }
 
 libversion_to_lib_major() {

