Fix TDEHW crash when cpufreq not available

tdecore/tdehardwaredevices.cpp

@@ -2133,6 +2133,7 @@ void TDEHardwareDevices::processModifiedCPUs() {
 		}
 
 		// Update CPU information structure
+		if (cdevice) {
 			if (cdevice->governor() != scalinggovernor) modified = true;
 			cdevice->internalSetGovernor(scalinggovernor);
 			if (cdevice->scalingDriver() != scalingdriver) modified = true;
@@ -2150,6 +2151,7 @@ void TDEHardwareDevices::processModifiedCPUs() {
 			if (cdevice->availableGovernors().join(" ") != governorlist.join(" ")) modified = true;
 			cdevice->internalSetAvailableGovernors(governorlist);
 		}
+	}
 
 	if (modified) {
 		for (processorNumber=0; processorNumber<processorCount; processorNumber++) {