Clear material arrays to prevent freeing of invalid texture RID

drivers/gles3/storage/material_storage.cpp

@@ -2765,6 +2765,14 @@ void MaterialStorage::material_free(RID p_rid) {
 	Material *material = material_owner.get_or_null(p_rid);
 	ERR_FAIL_COND(!material);
 
+	// Need to clear texture arrays to prevent spin locking of their RID's.
+	// This happens when the app is being closed.
+	for (KeyValue<StringName, Variant> &E : material->params) {
+		if (E.value.get_type() == Variant::ARRAY) {
+			Array(E.value).clear();
+		}
+	}
+
 	material_set_shader(p_rid, RID()); //clean up shader
 	material->dependency.deleted_notify(p_rid);
 

servers/rendering/renderer_rd/storage_rd/material_storage.cpp

@@ -2685,6 +2685,14 @@ void MaterialStorage::material_free(RID p_rid) {
 	Material *material = material_owner.get_or_null(p_rid);
 	ERR_FAIL_COND(!material);
 
+	// Need to clear texture arrays to prevent spin locking of their RID's.
+	// This happens when the app is being closed.
+	for (KeyValue<StringName, Variant> &E : material->params) {
+		if (E.value.get_type() == Variant::ARRAY) {
+			Array(E.value).clear();
+		}
+	}
+
 	material_set_shader(p_rid, RID()); //clean up shader
 	material->dependency.deleted_notify(p_rid);