Avoid float roundtrip for integer values

sum-sizes

@@ -56,12 +56,13 @@ for line in sys.stdin:
 		print(f'Skipping line with unknown unit: {origLine}', file = sys.stderr)
 		continue
 	try:
-		number = float(number)
+		if number.strip('0123456789') == '':
+			number = int(number)
+		else:
+			number = float(number)
 	except ValueError as e:
 		print(f'Skipping line with unparseable number: {origLine}', file = sys.stderr)
 		continue
-	if number.is_integer():
-		number = int(number)
 	sum += int(number * units[unit])
 
 # Special case because log(0) is kinda bad...