Make use of const-correct ParseCommandLineOptions

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150000 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/FrontendTool/ExecuteCompilerInvocation.cpp b/lib/FrontendTool/ExecuteCompilerInvocation.cpp
index c965692..0841b2c 100644
--- a/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ b/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -157,7 +157,7 @@
     for (unsigned i = 0; i != NumArgs; ++i)
       Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
     Args[NumArgs + 1] = 0;
-    llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args));
+    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args);
   }
 
   // Honor -analyzer-checker-help.