do not duplicate function records for decls

src/raddbg/raddbg_main.c

@@ -4,6 +4,11 @@
 ////////////////////////////////
 //~ rjf: post-0.9.25 TODO notes
 //
+// [ ] linux fixes
+//  [ ] step-over/step-into doesn't step successfully in many cases, just causes a continue
+//  [ ] rd_frame has no type info, should be (void -> void) - type should be generated but it
+//      is not being hooked up correctly
+//
 // [ ] many threads hitting conditional breakpoints -> causes 0x8000003 exception!
 //
 //- evaluation space coverage pass