perf jitdump: Fix missed dso__put

Reference count checking caught a missing dso__put following a
machine__findnew_dso_id.

Signed-off-by: Ian Rogers <[e-mail]>
Reviewed-by: Arnaldo Carvalho de Melo <[e-mail]>
Signed-off-by: Namhyung Kim <[e-mail]>

tools/perf/util/jitdump.c

···
 
 		if (dso)
 			dso__set_hit(dso);
+
+		dso__put(dso);
 	}
 out:
 	perf_sample__exit(&sample);