Memory Leaks fix

Fixed tiny leaks in thumbnail saving to XML. Also cleaner ending freeing all allocated.

src/UserInterfaceManager.h

@@ -484,6 +484,7 @@ public:
 protected:
 
     // internal
+    char inifilepath[2048];
     uint64_t start_time;
     bool ctrl_modifier_active;
     bool alt_modifier_active;