vmon: only save SIGCHLD snapshot w/{-s,--snapshot}

Apparently I never actually made this conditional on the flag...

1 files changed, 1 insertions, 1 deletions

diff --git a/src/vmon.c b/src/vmon.c
index 9e13c04..9a32031 100644
--- a/src/vmon.c
+++ b/src/vmon.c
@@ -654,7 +654,7 @@ int main(int argc, char * const argv[])
 		if (got_sigchld) {
 			int	status;
 
-			if (vmon_snapshot(vmon) < 0)
+			if (vmon->snapshot && vmon_snapshot(vmon) < 0)
 				VWM_ERROR("error saving snapshot");
 
 			got_sigchld = 0;