fixed segfault when statement list is empty
fixed segfault when statement list is empty

Angeldude/csound,nikhilsinghmus/csound,audiokit/csound,Angeldude/csound,audiokit/csound,nikhilsinghmus/csound,audiokit/csound,audiokit/csound,nikhilsinghmus/csound,Angeldude/csound,nikhilsinghmus/csound,Angeldude/csound,nikhilsinghmus/csound,audiokit/csound,audiokit/csound,Angeldude/csound,audiokit/csound,Angeldude/csound,Angeldude/csound,nikhilsinghmus/csound,audiokit/csound,audiokit/csound,nikhilsinghmus/csound,Angeldude/csound,Angeldude/csound,nikhilsinghmus/csound,nikhilsinghmus/csound,nikhilsinghmus/csound,audiokit/csound,Angeldude/csound