Fix an assert in search

After recent patch 55a3e0a, we have
an assert searching on:

5rk1/4K1pp/8/5PPP/8/8/8/1R6 w - - 12 1

Assert is:

Assertion `-VALUE_INFINITE <= alpha && alpha < beta && beta <= VALUE_INFINITE' failed.

The patch fixes it.

bench: 8094100

src/search.cpp

@@ -701,6 +701,7 @@ namespace {
                            &&  abs(beta) < VALUE_KNOWN_WIN
                            &&  ttMove != MOVE_NONE
                            &&  ttValue != VALUE_NONE
+                           &&  abs(ttValue) < VALUE_KNOWN_WIN
                            && !excludedMove // Recursive singular search is not allowed
                            && (tte->bound() & BOUND_LOWER)
                            &&  tte->depth() >= depth - 3 * ONE_PLY;