update gcc10 and clang-format10

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I72239b884615d26b2c4311c49a26e2eced0a1fb0
diff --git a/bmc/mapper_errors.hpp b/bmc/mapper_errors.hpp
index 8f30f30..7717f4b 100644
--- a/bmc/mapper_errors.hpp
+++ b/bmc/mapper_errors.hpp
@@ -10,8 +10,7 @@
 {
   public:
     explicit MapperException(const std::string& message) : message(message)
-    {
-    }
+    {}
 
     virtual const char* what() const noexcept override
     {