fixup! AI review feedback: mark header function as inline

include/xrpl/protocol/Rules.h

@@ -23,11 +23,8 @@ isFeatureEnabled(uint256 const& feature, bool resultIfNoRules);
  * Returns false if no global Rules object is available. i.e. Outside of
  * a Transactor context
  */
-inline bool
-isFeatureEnabled(uint256 const& feature)
-{
-    return isFeatureEnabled(feature, false);
-}
+bool
+isFeatureEnabled(uint256 const& feature);
 
 class DigestAwareReadView;
 

src/libxrpl/protocol/Rules.cpp

@@ -147,4 +147,10 @@ isFeatureEnabled(uint256 const& feature, bool resultIfNoRules)
     return rules->enabled(feature);
 }
 
+bool
+isFeatureEnabled(uint256 const& feature)
+{
+    return isFeatureEnabled(feature, false);
+}
+
 }  // namespace xrpl