[PATCH] Fix overflow in percentile calculation for Windows

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This patch fixes percentile calculation for Windows where overflow
on 32 bit type happened while calculating actual percentiles.

Signed-off-by: Andrzej Jakowski <andrzej.jakowski@xxxxxxxxx>
---
 stat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stat.c b/stat.c
index c5a68ad5..5c758680 100644
--- a/stat.c
+++ b/stat.c
@@ -139,7 +139,7 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 				   fio_fp64_t *plist, unsigned long long **output,
 				   unsigned long long *maxv, unsigned long long *minv)
 {
-	unsigned long sum = 0;
+	unsigned long long sum = 0;
 	unsigned int len, i, j = 0;
 	unsigned int oval_len = 0;
 	unsigned long long *ovals = NULL;
-- 
2.13.6

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