Fix copy-paste of rich resource text

* We need to cache to the QString text on demand, which requires a context
  potentially sooner than paint/etc time.

qrenderdoc/Windows/BufferViewer.cpp

@@ -1092,7 +1092,7 @@ public:
                   v = ToQStr(ptr);
                 }
 
-                RichResourceTextInitialise(v);
+                RichResourceTextInitialise(v, getCaptureContext(view));
 
                 if(RichResourceTextCheck(v))
                   return v;