Normalized digest check before installing zip

Change-Id: I5a3e82f103e7a80800be7790f1c8dc33c76413da
diff --git a/gui/action.cpp b/gui/action.cpp
index 1212026..87e9f30 100755
--- a/gui/action.cpp
+++ b/gui/action.cpp
@@ -403,7 +403,7 @@
 	if (simulate) {
 		simulate_progress_bar();
 	} else {
-		ret_val = TWinstall_zip(filename.c_str(), wipe_cache, (bool) DataManager::GetIntValue(TW_SKIP_DIGEST_CHECK_VAR));
+		ret_val = TWinstall_zip(filename.c_str(), wipe_cache, (bool) !DataManager::GetIntValue(TW_SKIP_DIGEST_CHECK_ZIP_VAR));
 		PartitionManager.Unlock_Block_Partitions();
 		// Now, check if we need to ensure TWRP remains installed...
 		struct stat st;