Program will crash if nr_runs is 0 due to dividing by it in
print_results(). Let's exit early instead.

Fixes: http://bugs.debian.org/716237
Signed-off-by: Boris Egorov <redacted>
---
 src/rt-migrate-test/rt-migrate-test.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/rt-migrate-test/rt-migrate-test.c b/src/rt-migrate-test/rt-migrate-test.c
index e3c7a09..711d8a4 100644
--- a/src/rt-migrate-test/rt-migrate-test.c
+++ b/src/rt-migrate-test/rt-migrate-test.c

@@ -226,7 +226,10 @@ static void parse_options (int argc, char *argv[])
 			break;
 		}
 	}