Fix broken fsflags support

Process_FS_Flags Flags parameter is just a copy not a reference,
not get updated, Mount_Flags always 0 - fix it now.

Thanks to SHM @ XDA-Developers

Change-Id: Ib044db905febfedefee493cfc04fd1cad6f61f8e
diff --git a/partition.cpp b/partition.cpp
index 918ba3c..f6adec9 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -418,7 +418,7 @@
 	return true;
 }
 
-bool TWPartition::Process_FS_Flags(string& Options, int Flags) {
+bool TWPartition::Process_FS_Flags(string& Options, int& Flags) {
 	int i;
 	char *p;
 	char *savep;