iniparser: `dictionary_set' must return a value.

The `dictionary_set' function is supposed to return an integer but in
two cases it was not leading to a build error when using Clang 3.4.
Merge pull request #41 from dholm/bugfix/osx

iniparser: `dictionary_set' must return a value.
xml_parser_ns_add: alloc item size, not pointer size

Memory corruption due to a malloc made with the wrong size in
function xml_parser_ns_add of module wsman-libxml2-binding.

Reported and fixed by Yves Vinter <yves.vinter@bull.net>