CONTRIB: tcploop: fix time format to silence build warnings

timeval doesn't necessarily have ints for tv_sec/tv_usec, let's cast
them.
diff --git a/contrib/tcploop/tcploop.c b/contrib/tcploop/tcploop.c
index 2b1735b..543e346 100644
--- a/contrib/tcploop/tcploop.c
+++ b/contrib/tcploop/tcploop.c
@@ -171,10 +171,10 @@
 				tv.tv_sec = 0;
 				tv.tv_usec = 0;
 			}
-			fprintf(stderr, "[%d.%06d] ", tv.tv_sec, tv.tv_usec);
+			fprintf(stderr, "[%d.%06d] ", (int)tv.tv_sec, (int)tv.tv_usec);
 			break;
 		default: // [sec.usec] absolute
-			fprintf(stderr, "[%d.%06d] ", date.tv_sec, date.tv_usec);
+			fprintf(stderr, "[%d.%06d] ", (int)date.tv_sec, (int)date.tv_usec);
 			break;
 		}
 	}