FIX: the lfsampling.c for t55xx had a tendecy to enter a neverending loop. Moved exit branch into the while statement, which seems to solve it.

FIX: Strange int -> uint8_t casting behavior  (0x05 gets the 25bit set and becomes 0x10005 instead) in fskdemod,  removed int and sscanf.

client/cmdlft55xx.c

@@ -1407,7 +1407,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
 			found = tryDetectModulation();
 
 			if ( found ) {
-				PrintAndLog("Found valid password:[%08X]", testpwd);
+				PrintAndLog("Found valid password: [%08X]", testpwd);
 				return 0;
 			} 
 		}