refactor: move DEFAULT_BLOCKFILTERINDEX from val to blockfilterindex

Author: fanquake

src/index/blockfilterindex.h

@@ -12,6 +12,8 @@
 #include <index/base.h>
 #include <util/hasher.h>
 
+static const char* const DEFAULT_BLOCKFILTERINDEX = "0";
+
 /** Interval between compact filter checkpoints. See BIP 157. */
 static constexpr int CFCHECKPT_INTERVAL = 1000;
 

src/validation.h

@@ -65,7 +65,6 @@ static const int MAX_SCRIPTCHECK_THREADS = 15;
 static const int DEFAULT_SCRIPTCHECK_THREADS = 0;
 static const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60;
 static const bool DEFAULT_CHECKPOINTS_ENABLED = true;
-static const char* const DEFAULT_BLOCKFILTERINDEX = "0";
 /** Default for -stopatheight */
 static const int DEFAULT_STOPATHEIGHT = 0;
 /** Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ActiveChain().Tip() will not be pruned. */