update deps and dont try to load files >50mib as images

external/solanaceae_message3

@@ -1 +1 @@
-Subproject commit d2d6cfbf5326de74cbac2dcd11be74df2cf79d2a
+Subproject commit 53d65a06855129135e5884f50d9983676290ac24

external/solanaceae_tox

@@ -1 +1 @@
-Subproject commit 70a234cdae751141f48b7a53a4e1cbedd84f31b2
+Subproject commit dd596bdad8d71654ff21dd3a032d6eb2dd7139a8

external/solanaceae_toxcore

@@ -1 +1 @@
-Subproject commit b49db892f6f0069985c763f7c8598b57fc9810dd
+Subproject commit dfa5a501ec4b4d929f473dabd51fa39bc0550266

src/main_screen.cpp

@@ -76,6 +76,8 @@ Screen* MainScreen::poll(bool& quit) {
 
 	quit = !tc.iterate();
 
+	tcm.iterate(time_delta);
+
 	pm.tick(time_delta);
 
 	mts.iterate();

src/media_meta_info_loader.cpp

@@ -25,6 +25,15 @@ void MediaMetaInfoLoader::handleMessage(const Message3Handle& m) {
 
 	std::ifstream file(fil.file_list.front(), std::ios::binary);
 	if (file.is_open()) {
+		// figure out size
+		file.seekg(0, file.end);
+		if (file.tellg() > 50*1024*1024) {
+			// TODO: conf
+			// dont try load files larger 50mb
+			return;
+		}
+		file.seekg(0, file.beg);
+
 		std::vector<uint8_t> tmp_buffer;
 		while (file.good()) {
 			auto ch = file.get();
@@ -38,6 +47,7 @@ void MediaMetaInfoLoader::handleMessage(const Message3Handle& m) {
 		bool could_load {false};
 		// try all loaders after another
 		for (auto& il : _image_loaders) {
+			// TODO: impl callback based load
 			auto res = il->loadInfoFromMemory(tmp_buffer.data(), tmp_buffer.size());
 			if (res.height == 0 || res.width == 0) {
 				continue;