Close connections in PostgresFullPrunedBlockStore. same as: b6f61e8850

core/src/main/java/com/google/bitcoin/store/PostgresFullPrunedBlockStore.java

@@ -222,6 +222,7 @@ public class PostgresFullPrunedBlockStore implements FullPrunedBlockStore {
             try {
                 if(!conn.getAutoCommit()) {
                     conn.rollback();
+                    conn.close();
                 }
             } catch (SQLException ex) {
                 throw new RuntimeException(ex);