janitorial: asc2log: properly close infile

outfile is closed as well, so do this symmetrically for infile.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

asc2log.c

@@ -343,5 +343,6 @@ int main(int argc, char **argv)
 		}
 	}
 	fclose(outfile);
+	fclose(infile);
 	return 0;
 }