Fixed boost::archive exception

src/usages_clang.cpp

@@ -759,9 +759,9 @@ Usages::Clang::Cache Usages::Clang::read_cache(const boost::filesystem::path &pr
   if(boost::filesystem::exists(cache_path, ec)) {
     std::ifstream stream(cache_path.string());
     if(stream) {
+      try {
         Cache cache;
         boost::archive::text_iarchive text_iarchive(stream);
-      try {
         text_iarchive >> cache;
         return cache;
       }