Don't warn about getting killed by SIGPIPE

SIGPIPE is business as usual when pipes are involved and require
no special warnings (that's why we're handling it after all), but
getting killed by other means seems still worth logging.

rpmio/rpmsq.c

@@ -28,7 +28,8 @@ static void rpmsqTerm(int signum, siginfo_t *info, void *context)
 	rpmlog(RPMLOG_DEBUG,
 		"exiting on signal %d (killed by death, eh?)\n", signum);
     } else {
-	rpmlog(RPMLOG_WARNING,
+	int lvl = (signum == SIGPIPE) ? RPMLOG_DEBUG : RPMLOG_WARNING;
+	rpmlog(lvl,
 		_("exiting on signal %d from pid %d\n"), signum, info->si_pid);
     }
     exit(EXIT_FAILURE);