Move the default heap size initialization

Author: swankjesse

core/iwasm/common/wasm_c_api.c

@@ -392,7 +392,6 @@ wasm_engine_new_internal(wasm_config_t *config)
 
     WASM_C_DUMP_PROC_MEM();
 
-    init_args.gc_heap_size = GC_HEAP_SIZE_DEFAULT;
     /* wasm_config_t->MemAllocOption -> RuntimeInitArgs->MemAllocOption */
     init_args.mem_alloc_type = config->mem_alloc_type;
     memcpy(&init_args.mem_alloc_option, &config->mem_alloc_option,

core/iwasm/common/wasm_runtime_common.c

@@ -757,7 +757,10 @@ wasm_runtime_full_init_internal(RuntimeInitArgs *init_args)
 #endif
 
 #if WASM_ENABLE_GC != 0
-    gc_heap_size_default = init_args->gc_heap_size;
+    uint32 gc_heap_size = init_args->gc_heap_size;
+    if (gc_heap_size > 0) {
+        gc_heap_size_default = gc_heap_size;
+    }
 #endif
 
 #if WASM_ENABLE_JIT != 0