Fix a missing trailing newline

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/vl.c b/vl.c
index 768dbf4..c605347 100644
--- a/vl.c
+++ b/vl.c
@@ -2603,7 +2603,7 @@
 		     if (p != NULL) {
 		        *p++ = 0;
 			if (strncmp(p, "process=", 8)) {
-			    fprintf(stderr, "Unknown subargument %s to -name", p);
+			    fprintf(stderr, "Unknown subargument %s to -name\n", p);
 			    exit(1);
 			}
 			p += 8;