[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/subcommand/showref_subcommand.cpp

@@ -23,7 +23,7 @@ void showref_subcommand::run()
 
     auto repo_refs = repo.refs_list();
 
-    for (auto r:repo_refs)
+    for (auto r : repo_refs)
     {
         git_oid oid = repo.ref_name_to_id(r);
         std::cout << oid_to_hex(oid) << " " << r << std::endl;

src/subcommand/showref_subcommand.hpp

@@ -12,6 +12,4 @@ class showref_subcommand
     void run();
 
 private:
-
-
 };