Problem:
wmi.getall[] - returns incorrect value when using data type real32
 

Usage:

 C:\Program Files\Zabbix Agent>zabbix_get -s 127.0.0.1 -k wmi.get[root\OpenHardwareMonitor,"select Max from sensor where (Parent LIKE '%RAM%' AND SensorType = \"Load\")"]

Returned value: 79.757965

C:\Program Files\Zabbix Agent>zabbix_get -s 127.0.0.1 -k wmi.getall[root\OpenHardwareMonitor,"select Max from sensor where (Parent LIKE '%RAM%' AND SensorType = \"Load\")"]

Returned value: [\{"Max":4635312884778270720.}]

Description:
When using wmi.getall[], if the object parameters have type Real32 the returned value is incorrect. When using wmi.get[] there's no such issue.

Tried to debug it, the returned value using key wmi.getall[] as to IEEE 754 (decimal number represented in hex) - the resulted value is incorrect. Also it falls over the 32-bits.

P.S. Also the left-most dot after the digits looks suspicious.