Fix GCC warnings

Author: GrieferAtWork

include/deemon/api.h

@@ -602,7 +602,7 @@ __pragma_GCC_diagnostic_ignored(Walloc_size_larger_than)
  * "gc.collect()". This new implementation's gc.collect() is O(n). */
 #if (!defined(CONFIG_EXPERIMENTAL_REWORKED_GC) && \
      !defined(CONFIG_NO_EXPERIMENTAL_REWORKED_GC))
-#if 1 /* TODO: Implementation is complete, but untested */
+#if 1
 #define CONFIG_EXPERIMENTAL_REWORKED_GC
 #else
 #define CONFIG_NO_EXPERIMENTAL_REWORKED_GC

include/deemon/code.h

@@ -1085,7 +1085,7 @@ typedef struct Dee_function_object {
 			DREF DeeObject *fo_refv[fo_refc_];             \
 		} ob;                                              \
 	} name = {                                             \
-		{ NULL, NULL },                                    \
+		{ _Dee_GC_HEAD_UNTRACKED_INIT },                   \
 		{ Dee_OBJECT_HEAD_INIT(&DeeFunction_Type),         \
 		  fo_code_,                                        \
 		  _Dee_PRIVATE_FUNCTION_FO_HOSTASM_INIT            \
@@ -1102,7 +1102,7 @@ typedef struct Dee_function_object {
 			_Dee_PRIVATE_FUNCTION_FO_REFLOCK_FIELD \
 		} ob;                                      \
 	} name = {                                     \
-		{ NULL, NULL },                            \
+		{ _Dee_GC_HEAD_UNTRACKED_INIT },           \
 		{ Dee_OBJECT_HEAD_INIT(&DeeFunction_Type), \
 		  fo_code_,                                \
 		  _Dee_PRIVATE_FUNCTION_FO_HOSTASM_INIT    \

src/dex/rt/librt.c

@@ -2582,7 +2582,7 @@ PRIVATE struct {
 	struct Dee_gc_head_link _gc_head_data;
 	DeeYieldFunctionIteratorObject ob;
 } DeeYieldFunctionIterator_Empty = {
-	{ NULL, NULL },
+	{ _Dee_GC_HEAD_UNTRACKED_INIT },
 	{
 		OBJECT_HEAD_INIT(&DeeYieldFunctionIterator_Type),
 		/* .yi_func = */ (DeeYieldFunctionObject *)&DeeYieldFunction_Empty,