silence warnings

Index: uuid.h
--- uuid.h.orig
+++ uuid.h
@@ -113,7 +113,9 @@ class uuid { (public)
 		char ids[38];
 		snprintf(ids, 38, "%08x-%04hx-%04hx-%04hx-%02hx%02hx%02hx%02hx%02hx%02hx",
 				 (unsigned int) *time_low, *time_mid, *time_hi, *clock_seq,
-				 node[0], node[1], node[2], node[3], node[4], node[5]);
+				 (unsigned short)node[0], (unsigned short)node[1],
+				 (unsigned short)node[2], (unsigned short)node[3],
+				 (unsigned short)node[4], (unsigned short)node[5]);
 		return string(ids);
 	}