utils: Adapt to llvm r325155

r325155 ("Pass a reference to a module to the bitcode writer.")
changed bit writer interface from pointer to reference

Reviewer: Aaron Watry <awatry@gmail.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 325867
GitOrigin-RevId: 86db4302e023bcc364fa56078485090d1e899c8c
1 file changed