Unbreak the clang build by applying the same temporary
workaround for machine code emitter changes as was used
in llvm-gcc.

llvm-svn: 72657
diff --git a/clang/lib/Frontend/Backend.cpp b/clang/lib/Frontend/Backend.cpp
index 259713f..44aa3a8 100644
--- a/clang/lib/Frontend/Backend.cpp
+++ b/clang/lib/Frontend/Backend.cpp
@@ -250,7 +250,8 @@
       break;
     }
     
-    if (TM->addPassesToEmitFileFinish(*CodeGenPasses, 0, OptLevel)) {
+    if (TM->addPassesToEmitFileFinish(*CodeGenPasses, (MachineCodeEmitter *)0,
+                                      OptLevel)) {
       Error = "Unable to interface with target machine!\n";
       return false;
     }