Increase max password size to 128 chars (nicehash)

--pass="f0=0;f2=0;f3=2.7;f4=1.9;f5=99;f6=1.8;f7=7.9;f8=0;f9=0.45;f10=0;f11=4.3;f12=3.9"

miner.h

@@ -632,7 +632,7 @@ struct pool_infos {
 	char url[256];
 	char short_url[64];
 	char user[64];
-	char pass[64];
+	char pass[128];
 	// config options
 	double max_diff;
 	double max_rate;