Patch from Adam Fix movie playback in Opening Sequence

- copy fMoviePath in plMoviePlayer::SetFileName() rather than use existing pointer
- fix inability of xOpeningSequence.py to play movie.  File path provided not persistent.

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfMoviePlayer/plMoviePlayer.cpp

@@ -193,6 +193,7 @@ plMoviePlayer::~plMoviePlayer()
         delete fReader;
     }
 #endif
+	delete[] fMoviePath;
 }
 
 bool plMoviePlayer::IOpenMovie()

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfMoviePlayer/plMoviePlayer.h

@@ -102,7 +102,11 @@ public:
     plMessage* GetCallback(int i) const { return nullptr; }
 
     const char *GetFileName() const { return fMoviePath; }
-    void SetFileName(const char* filename) { fMoviePath = filename; }
+    void SetFileName(const char* filename)
+	{
+		delete[] fMoviePath;
+		fMoviePath = hsStrcpy(filename);
+	}
 
     void SetColor(const hsColorRGBA& c) { }
     const hsColorRGBA GetColor() const { return hsColorRGBA(); }