fix crash
authorAlexei Starovoitov <alexei.starovoitov@gmail.com>
Wed, 10 Jun 2015 03:06:06 +0000 (03:06 +0000)
committerAlexei Starovoitov <alexei.starovoitov@gmail.com>
Wed, 10 Jun 2015 03:06:06 +0000 (03:06 +0000)
commita38e1982227952be8c6117d4c33b3041efa67815
treeeaeff9d8661a60a56c33a55f6cfff8b0f6e5873d
parent8e29d7162352426ecb8d178989d7279f344d423d
fix crash

fix segfault by checking for UnknownArch, since
getArchTypePrefix() will return nullptr for UnknownArch.

This fixes regression caused by r238424.

llvm-svn: 239456
llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp