struct function pointer field regex fix.
struct function pointer field regex fix.

* parser/gapi2xml.pl: match when there is whitespace after the
function name within the parens of a struct field declaration.

Gankov/gtk-sharp,akrisiun/gtk-sharp,Gankov/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,antoniusriha/gtk-sharp,Gankov/gtk-sharp,sillsdev/gtk-sharp,Gankov/gtk-sharp,orion75/gtk-sharp,orion75/gtk-sharp,akrisiun/gtk-sharp,sillsdev/gtk-sharp,orion75/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,akrisiun/gtk-sharp,openmedicus/gtk-sharp,Gankov/gtk-sharp,akrisiun/gtk-sharp,antoniusriha/gtk-sharp,openmedicus/gtk-sharp,akrisiun/gtk-sharp,antoniusriha/gtk-sharp,orion75/gtk-sharp,antoniusriha/gtk-sharp,sillsdev/gtk-sharp,sillsdev/gtk-sharp,antoniusriha/gtk-sharp,Gankov/gtk-sharp