Driver: Fix infinite loop and wrong message on invalid -ccc-clang-arch argument.

llvm-svn: 95848
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index a2fc5aa..53eafd7 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -158,10 +158,8 @@
         llvm::Triple::ArchType Arch =
           llvm::Triple(Split.first, "", "").getArch();
 
-        if (Arch == llvm::Triple::UnknownArch) {
-          Diag(clang::diag::err_drv_invalid_arch_name) << Arch;
-          continue;
-        }
+        if (Arch == llvm::Triple::UnknownArch)
+          Diag(clang::diag::err_drv_invalid_arch_name) << Split.first;
 
         CCCClangArchs.insert(Arch);
       }