dmsetup: Flush ouptut when using --interval

A program may like to run "dmstatus report --interval 2" and read the report output via a pipe. Flush stdout after outputting each report to make this possible.

---
 tools/dmsetup.c | 1 +
 1 file changed, 1 insertion(+)

index 1e22cf1..1529fb3 100644
@@ -7081,6 +7081,7 @@ doit:
 
 			if (_count > 1 && r) {
 				printf("\n");
+				fflush(stdout);
 				/* wait for --interval and update timestamps */
 				if (!_do_report_wait()) {
 					ret = 1;

2.9.3

Merged, thanks!

Bryn.