Add "generic" fallback.

gcc warned that the function may not have a return value, indeed
for non-intel and non-amd X86 CPUs it is right (VIA, etc.).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Host.cpp b/lib/System/Host.cpp
index 3196a63..79897e4 100644
--- a/lib/System/Host.cpp
+++ b/lib/System/Host.cpp
@@ -292,6 +292,7 @@
       return "generic";
     }
   }
+  return "generic";
 }
 #else
 std::string sys::getHostCPUName() {