functions: msg should always return success

Otherwise abuild-sign will end with error

functions.sh.in

@@ -109,7 +109,9 @@ abuild)
 		local prompt="$GREEN>>>${NORMAL}"
 		local fake="${FAKEROOTKEY:+${BLUE}*${NORMAL}}"
 		local name="${STRONG}${subpkgname:-$pkgname}${NORMAL}"
-		[ -z "$quiet" ] && printf "${prompt} ${name}${fake}: $@\n" >&2
+		if [ -z "$quiet" ]; then
+			printf "${prompt} ${name}${fake}: $@\n" >&2
+		fi
 	}
 
 	warning() {
@@ -129,7 +131,9 @@ abuild)
 *)
 	msg() {
 		# Here we write to stdout, but abuild's fancier messages write to stderr
-		[ -z "$quiet" ] && echo "$@"
+		if [ -z "$quiet" ]; then
+			echo "$@"
+		fi
 	}
 
 	error() {