Use the triple directly, rather then getTriple().

llvm-svn: 156501
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 12f292d..395d22e 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -61,7 +61,7 @@
   DarwinVersion[2] = 0;
 
   // Compute the initial iOS version from the triple
-  getTriple().getiOSVersion(Major, Minor, Micro);
+  Triple.getiOSVersion(Major, Minor, Micro);
   llvm::raw_string_ostream(iOSVersionMin)
     << Major << '.' << Minor << '.' << Micro;
 }