[warning-fix][-Wreturn-type]:change return type to void, clean up block comment

src/fedex_plus/classes.h

@@ -88,7 +88,7 @@ struct EntityTag_ {
 Entity ENTITYget_superclass (Entity entity);
 Entity ENTITYput_superclass (Entity entity);
 int ENTITYhas_explicit_attributes (Entity e);
-Linked_List ENTITYget_first_attribs(Entity entity, Linked_List result);
+void ENTITYget_first_attribs(Entity entity, Linked_List result);
 
 typedef struct SelectTag_ *SelectTag;
 struct SelectTag_ {

src/fedex_plus/classes_misc.c

@@ -761,8 +761,7 @@ ENTITYget_superclass( Entity entity ) {
     return ( tag ? tag -> superclass : 0 );
 }
 
-Linked_List
-ENTITYget_first_attribs( Entity entity, Linked_List result ) {
+void ENTITYget_first_attribs( Entity entity, Linked_List result ) {
     Linked_List supers;
 
     LISTdo( ENTITYget_attributes( entity ), attr, Generic )
@@ -777,13 +776,13 @@ ENTITYget_first_attribs( Entity entity, Linked_List result ) {
 /* Attributes are divided into four categories:
 ** these are not exclusive as far as I can tell! I added defs below DAS
 **
-**      . simple explicit
+**  . simple explicit
 **  . type shifters    // not DERIVEd - redefines type in ancestor
-               // VARget_initializer(v) returns null
-
-**      . simple derived   // DERIVEd - is calculated - VARget_initializer(v)
-               // returns non-zero, VARis_derived(v) is non-zero
-
+**                     // VARget_initializer(v) returns null
+**
+**  . simple derived   // DERIVEd - is calculated - VARget_initializer(v)
+**                     // returns non-zero, VARis_derived(v) is non-zero
+**
 **  . overriding       // includes type shifters and derived
 **
 ** All of them are added to the dictionary.