add 2 constructors in CDiskBlockPos to simplify class usage

- add a default-constructor, which simply calls SetNull() and a
  constructor to directly pass nFile and nPos
- change code to use that new constructors

1 files changed, 1 insertions, 3 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 944345abb..52c7d73e8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1535,9 +1535,7 @@ void static FlushBlockFile()
 {
     LOCK(cs_LastBlockFile);
 
-    CDiskBlockPos posOld;
-    posOld.nFile = nLastBlockFile;
-    posOld.nPos = 0;
+    CDiskBlockPos posOld(nLastBlockFile, 0);
 
     FILE *fileOld = OpenBlockFile(posOld);
     FileCommit(fileOld);