From 292112f87ef1780fee6164063a60af9ee7bf3f86 Mon Sep 17 00:00:00 2001
From: kobake <kobake@users.sourceforge.net>
Date: Tue, 14 Feb 2017 15:39:51 +0900
Subject: [PATCH] Fix msvc compiler error C4146 (minus operator applied to
 unsigned type)

On msvc14, the compiler error C4146 (unary minus operator applied to unsigned type, result still unsigned) had been occured.
Use '0 - x' styled formula instead of '-x' so as to fix the error.
---
 src/bloom.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bloom.cpp b/src/bloom.cpp
index 8d47cb76e..ac3e56572 100644
--- a/src/bloom.cpp
+++ b/src/bloom.cpp
@@ -254,8 +254,8 @@ void CRollingBloomFilter::insert(const std::vector<unsigned char>& vKey)
         if (nGeneration == 4) {
             nGeneration = 1;
         }
-        uint64_t nGenerationMask1 = -(uint64_t)(nGeneration & 1);
-        uint64_t nGenerationMask2 = -(uint64_t)(nGeneration >> 1);
+        uint64_t nGenerationMask1 = 0 - (uint64_t)(nGeneration & 1);
+        uint64_t nGenerationMask2 = 0 - (uint64_t)(nGeneration >> 1);
         /* Wipe old entries that used this generation number. */
         for (uint32_t p = 0; p < data.size(); p += 2) {
             uint64_t p1 = data[p], p2 = data[p + 1];