[system_error.syn] Minor whitespace adjustments

Author: tkoeppe

source/diagnostics.tex

@@ -795,10 +795,10 @@
   class system_error;
 
   template <class T>
-  struct is_error_code_enum : public false_type {};
+    struct is_error_code_enum : public false_type {};
 
   template <class T>
-  struct is_error_condition_enum : public false_type {};
+    struct is_error_condition_enum : public false_type {};
 
   enum class errc {
     address_family_not_supported,       // \tcode{EAFNOSUPPORT}
@@ -911,10 +911,10 @@
   template <> struct hash<error_condition>;
 
   // \ref{syserr}, system error support
-  template <class T> inline constexpr bool is_error_code_enum_v
-    = is_error_code_enum<T>::value;
-  template <class T> inline constexpr bool is_error_condition_enum_v
-    = is_error_condition_enum<T>::value;
+  template <class T>
+    inline constexpr bool is_error_code_enum_v = is_error_code_enum<T>::value;
+  template <class T>
+    inline constexpr bool is_error_condition_enum_v = is_error_condition_enum<T>::value;
 }
 \end{codeblock}