perf tools: Explicitly declare inc_group_count as a void function
The return type is not defined, so it defaults to int, however, the function is not returning anything, so this is clearly not correct. Make it a void function. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457008214-14393-1-git-send-email-colin.king@canonical.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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