Move initialization of PawnInfo in its c'tor

Where it belongs.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

src/pawns.cpp

@@ -23,7 +23,6 @@
 ////
 
 #include <cassert>
-#include <cstring>
 
 #include "bitcount.h"
 #include "pawns.h"
@@ -147,7 +146,6 @@ PawnInfoTable::PawnInfoTable(unsigned numOfEntries) {
                 << " bytes for pawn hash table." << std::endl;
       Application::exit_with_failure();
   }
-  clear();
 }
 
 
@@ -158,14 +156,6 @@ PawnInfoTable::~PawnInfoTable() {
 }
 
 
-/// PawnInfoTable::clear() clears the pawn hash table by setting all
-/// entries to 0.
-
-void PawnInfoTable::clear() {
-  memset(entries, 0, size * sizeof(PawnInfo));
-}
-
-
 /// PawnInfoTable::get_pawn_info() takes a position object as input, computes
 /// a PawnInfo object, and returns a pointer to it.  The result is also
 /// stored in a hash table, so we don't have to recompute everything when