fix compiler warning

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5101 43c1dc8c-776e-4df2-8ef1-6e829299be21
references #174; do not use IPv6 for video (not supportet by cuva)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5102 43c1dc8c-776e-4df2-8ef1-6e829299be21