Avoid some struct declarations inside paramater list, it makes even GCC7 confusing

engine/common/net_encode.h

@@ -26,6 +26,7 @@ GNU General Public License for more details.
 #define DT_STRING		BIT( 7 )	// A null terminated string, sent as 8 byte chars
 #define DT_SIGNED		BIT( 8 )	// sign modificator
 
+#undef offsetof
 #define offsetof( s, m )	(size_t)&(((s *)0)->m)
 #define NUM_FIELDS( x )	((sizeof( x ) / sizeof( x[0] )) - 1)
 
@@ -95,8 +96,8 @@ void Delta_AddEncoder( char *name, pfnDeltaEncode encodeFunc );
 int Delta_FindField( delta_t *pFields, const char *fieldname );
 void Delta_SetField( delta_t *pFields, const char *fieldname );
 void Delta_UnsetField( delta_t *pFields, const char *fieldname );
-void Delta_SetFieldByIndex( struct delta_s *pFields, int fieldNumber );
-void Delta_UnsetFieldByIndex( struct delta_s *pFields, int fieldNumber );
+void Delta_SetFieldByIndex( delta_t *pFields, int fieldNumber );
+void Delta_UnsetFieldByIndex( delta_t *pFields, int fieldNumber );
 
 // send table over network
 void Delta_WriteTableField( sizebuf_t *msg, int tableIndex, const delta_t *pField );
@@ -104,18 +105,24 @@ void Delta_ParseTableField( sizebuf_t *msg );
 
 
 // encode routines
-void MSG_WriteDeltaUsercmd( sizebuf_t *msg, struct usercmd_s *from, struct usercmd_s *to );
-void MSG_ReadDeltaUsercmd( sizebuf_t *msg, struct usercmd_s *from, struct usercmd_s *to );
-void MSG_WriteDeltaEvent( sizebuf_t *msg, struct event_args_s *from, struct event_args_s *to );
-void MSG_ReadDeltaEvent( sizebuf_t *msg, struct event_args_s *from, struct event_args_s *to );
-qboolean MSG_WriteDeltaMovevars( sizebuf_t *msg, struct movevars_s *from, struct movevars_s *to );
-void MSG_ReadDeltaMovevars( sizebuf_t *msg, struct movevars_s *from, struct movevars_s *to );
-void MSG_WriteClientData( sizebuf_t *msg, struct clientdata_s *from, struct clientdata_s *to, float timebase );
-void MSG_ReadClientData( sizebuf_t *msg, struct clientdata_s *from, struct clientdata_s *to, float timebase );
-void MSG_WriteWeaponData( sizebuf_t *msg, struct weapon_data_s *from, struct weapon_data_s *to, float timebase, int index );
-void MSG_ReadWeaponData( sizebuf_t *msg, struct weapon_data_s *from, struct weapon_data_s *to, float timebase );
-void MSG_WriteDeltaEntity( struct entity_state_s *from, struct entity_state_s *to, sizebuf_t *msg, qboolean force, qboolean pl, float tbase, int bl );
-qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, struct entity_state_s *from, struct entity_state_s *to, int num, qboolean player, float timebase );
-int Delta_TestBaseline( struct entity_state_s *from, struct entity_state_s *to, qboolean player, float timebase );
+typedef struct entity_state_s entity_state_t;
+typedef struct usercmd_s usercmd_t;
+typedef struct event_args_s event_args_t;
+typedef struct movevars_s movevars_t;
+typedef struct clientdata_s clientdata_t;
+typedef struct weapon_data_s weapon_data_t;
+void MSG_WriteDeltaUsercmd( sizebuf_t *msg, usercmd_t *from, usercmd_t *to );
+void MSG_ReadDeltaUsercmd( sizebuf_t *msg, usercmd_t *from, usercmd_t *to );
+void MSG_WriteDeltaEvent( sizebuf_t *msg, event_args_t *from, event_args_t *to );
+void MSG_ReadDeltaEvent( sizebuf_t *msg, event_args_t *from, event_args_t *to );
+qboolean MSG_WriteDeltaMovevars( sizebuf_t *msg, movevars_t *from, movevars_t *to );
+void MSG_ReadDeltaMovevars( sizebuf_t *msg, movevars_t *from, movevars_t *to );
+void MSG_WriteClientData( sizebuf_t *msg, clientdata_t *from, clientdata_t *to, float timebase );
+void MSG_ReadClientData( sizebuf_t *msg, clientdata_t *from, clientdata_t *to, float timebase );
+void MSG_WriteWeaponData( sizebuf_t *msg, weapon_data_t *from, weapon_data_t *to, float timebase, int index );
+void MSG_ReadWeaponData( sizebuf_t *msg, weapon_data_t *from, weapon_data_t *to, float timebase );
+void MSG_WriteDeltaEntity( entity_state_t *from, entity_state_t *to, sizebuf_t *msg, qboolean force, qboolean pl, float tbase, int bl );
+qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, entity_state_t *from, entity_state_t *to, int num, qboolean player, float timebase );
+int Delta_TestBaseline( entity_state_t *from, entity_state_t *to, qboolean player, float timebase );
 
 #endif//NET_ENCODE_H