Remove extra semi colon from internal_repo_rocksdb/repo/util/coding_t…

…est.cc

Summary:
`-Wextra-semi` or `-Wextra-semi-stmt`

If the code compiles, this is safe to land.

Reviewed By: palmje

Differential Revision: D55534622

fbshipit-source-id: dfff34924da6f2cdad34ed21f8f08a9bab9189a7

util/coding_test.cc

@@ -127,7 +127,7 @@ TEST(Coding, Varint64) {
     values.push_back(power);
     values.push_back(power - 1);
     values.push_back(power + 1);
-  };
+  }
 
   std::string s;
   for (unsigned int i = 0; i < values.size(); i++) {