Add functions to construct locators without CChain

This introduces an insignificant performance penalty, as it means locator
construction needs to use the skiplist-based CBlockIndex::GetAncestor()
function instead of the lookup-based CChain, but avoids the need for
callers to have access to a relevant CChain object.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/skiplist_tests.cpp b/src/test/skiplist_tests.cpp
index 3d3fd5d93d..9f5e3ab7ae 100644
--- a/src/test/skiplist_tests.cpp
+++ b/src/test/skiplist_tests.cpp
@@ -78,7 +78,7 @@ BOOST_AUTO_TEST_CASE(getlocator_test)
     for (int n=0; n<100; n++) {
         int r = InsecureRandRange(150000);
         CBlockIndex* tip = (r < 100000) ? &vBlocksMain[r] : &vBlocksSide[r - 100000];
-        CBlockLocator locator = chain.GetLocator(tip);
+        CBlockLocator locator = GetLocator(tip);
 
         // The first result must be the block itself, the last one must be genesis.
         BOOST_CHECK(locator.vHave.front() == tip->GetBlockHash());