refactor(cpp1): update comment

Author: JohelEGP

source/cppfront.cpp

@@ -1798,7 +1798,7 @@ class cppfront
         auto guard = finally([&]{ looking_up.pop_back(); });
 
         bool res = false;
-        // If any parent declaration
+        // If the first parent declaration
         std::find_if(current_declarations.rbegin(), current_declarations.rend() - 1, [&](declaration_node const* decl) {
             // that can have aliases
             if ((decl->is_function()