ckdb - missing space in blcoks insert

src/ckdb.c

@@ -4157,7 +4157,7 @@ static bool blocks_add(PGconn *conn, char *height, char *blockhash,
 				HISTORYDATECONTROL ") select "
 				"height,blockhash,workinfoid,userid,workername,"
 				"clientid,enonce1,nonce2,nonce,reward,confirmed,"
-				"$3,$4,$5,$6,$7 from blocks where"
+				"$3,$4,$5,$6,$7 from blocks where "
 				"blockhash=$1 and expirydate=$2";
 
 			res = PQexecParams(conn, ins, par, NULL, (const char **)params, NULL, NULL, 0);