FIX: fixed a little bug I introduced from last commit in fskdemod

CHG: tab fixes in cmdlf.c and minor code clean up
CHG: minor variable name change, printstatement in cmddata.c

client/cmddata.c

@@ -220,12 +220,12 @@ int Cmdaskmandemod(const char *Cmd)
 	PrintAndLog("ASK/Manchester decoded bitstream:");
 
 	printBitStream(bits, len);
-	uint64_t lo = Em410xDecode(bits, len);
 
-	if (lo > 0){
-		SetGraphBuf(bits,len); 
-		PrintAndLog("EM410x pattern found: ");
-		printEM410x(lo);
+	uint64_t tagid = Em410xDecode(bits, len);
+
+	if (tagid > 0){
+		SetGraphBuf(bits, len); 
+		printEM410x(tagid);
 		return 1;
 	}
 	return 0;

common/lfdemod.c

@@ -538,8 +538,6 @@ int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t
 	size = fsk_wave_demod(dest, size, fchigh, fclow);
 	if ( size > 0 )
 		size = aggregate_bits(dest, size, rfLen, 192, invert, fchigh, fclow);
-	else
-		return -1;
 	return size;
 }