Fixed getModuleInfo() syntax error on php older than 5.2.3

I got following error on php 5.2.14 and 5.2.17 servers:
```
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /Users/Roope/Sites/test/wire/core/Modules.php on line 273
```
Same kind of issue was referenced on line 764 so added similar fix for this one.