fixes uninitialized warning

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4192 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix #28 : returning information when gpickup failed.

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4193 43c1dc8c-776e-4df2-8ef1-6e829299be21
this is references issue #31, untested

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4194 43c1dc8c-776e-4df2-8ef1-6e829299be21