asan_symbolize.py: use llvm-symbolizer results even if it returned function name w/o file/line info
asan_symbolize.py: use llvm-symbolizer results even if it returned function name w/o file/line info

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@202983 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt