compositor-rdp: Add missing '\n' in weston_log usage

Signed-off-by: Chris Michael <cp.michael@samsung.com>
diff --git a/src/compositor-rdp.c b/src/compositor-rdp.c
index c221eb9..7272f41 100644
--- a/src/compositor-rdp.c
+++ b/src/compositor-rdp.c
@@ -1241,7 +1241,7 @@
 		/* get the socket from RDP_FD var */
 		fd_str = getenv("RDP_FD");
 		if (!fd_str) {
-			weston_log("RDP_FD env variable not set");
+			weston_log("RDP_FD env variable not set\n");
 			goto err_output;
 		}