Unbreak CMake build.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128276 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CMakeLists.txt

@@ -29,6 +29,7 @@ add_clang_library(clangCodeGen
   CGObjC.cpp
   CGObjCGNU.cpp
   CGObjCMac.cpp
+  CGObjCRuntime.cpp
   CGRecordLayoutBuilder.cpp
   CGRTTI.cpp
   CGStmt.cpp