perf annotate: Fix --stdio rendering

The checks for not using a max_lines parameter were b0rked, problem
introduced in 3653246.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/annotate.c

@@ -132,7 +132,7 @@ static int objdump_line__print(struct objdump_line *oline,
 		if (percent < min_pcnt)
 			return -1;
 
-		if (printed >= max_lines)
+		if (max_lines && printed >= max_lines)
 			return 1;
 
 		color = get_percent_color(percent);
@@ -154,7 +154,7 @@ static int objdump_line__print(struct objdump_line *oline,
 		color_fprintf(stdout, color, " %7.2f", percent);
 		printf(" :	");
 		color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", oline->line);
-	} else if (printed >= max_lines)
+	} else if (max_lines && printed >= max_lines)
 		return 1;
 	else {
 		if (!*oline->line)