Update init.cpp

Removed semicolon at the end of the -wallet argument in the help message which was preventing everything below it from showing up.
Merge pull request #303 from asadhaider/master-1.5

Update init.cpp
Fix build

On a current debian unstable (gcc 4.8.2) I was having a bit of namespace
trouble when building. This fixes the build for me.

Please review thoroughly, I am new here.