Make g_argvs static
Fix Clang warning:
| warning: no previous extern declaration for non-static variable 'g_argvs'
| [-Wmissing-variable-declarations]
diff --git a/googletest/src/gtest.cc b/googletest/src/gtest.cc
index 9796637..96b07c6 100644
--- a/googletest/src/gtest.cc
+++ b/googletest/src/gtest.cc
@@ -427,7 +427,7 @@
GTEST_API_ GTEST_DEFINE_STATIC_MUTEX_(g_linked_ptr_mutex);
// A copy of all command line arguments. Set by InitGoogleTest().
-::std::vector<std::string> g_argvs;
+static ::std::vector<std::string> g_argvs;
::std::vector<std::string> GetArgvs() {
#if defined(GTEST_CUSTOM_GET_ARGVS_)