[llvm-mca] Make ViewOptions static. NFCI

llvm-svn: 330829
diff --git a/llvm/tools/llvm-mca/llvm-mca.cpp b/llvm/tools/llvm-mca/llvm-mca.cpp
index 73d4d8e..423f852 100644
--- a/llvm/tools/llvm-mca/llvm-mca.cpp
+++ b/llvm/tools/llvm-mca/llvm-mca.cpp
@@ -52,7 +52,7 @@
 
 using namespace llvm;
 
-llvm::cl::OptionCategory ViewOptions("View Options");
+static llvm::cl::OptionCategory ViewOptions("View Options");
 
 static cl::opt<std::string>
     InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));