Fix various minor issues find via unreachable code warnings, from
Ahmed Charles!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143569 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 34ad608..b498290 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -690,11 +690,12 @@
   case LangOptions::SOB_Undefined: break;
   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
   case LangOptions::SOB_Trapping:
-    Res.push_back("-ftrapv"); break;
+    Res.push_back("-ftrapv");
     if (!Opts.OverflowHandler.empty()) {
       Res.push_back("-ftrapv-handler");
       Res.push_back(Opts.OverflowHandler);
     }
+    break;
   }
   if (Opts.HeinousExtensions)
     Res.push_back("-fheinous-gnu-extensions");