Driver: UnknownHostInfo was always returning 0.

llvm-svn: 67150
diff --git a/clang/lib/Driver/HostInfo.cpp b/clang/lib/Driver/HostInfo.cpp
index d43d234..a1dc149 100644
--- a/clang/lib/Driver/HostInfo.cpp
+++ b/clang/lib/Driver/HostInfo.cpp
@@ -175,7 +175,7 @@
                                      getPlatformName().c_str(), 
                                      getOSName().c_str());
 
-  return 0;
+  return TC;
 }
 
 }