r300: operate on copy of a program when pairing instructions

We need to keep unpaired program for vertex program NQSSADCE.

src/mesa/drivers/dri/r300/radeon_program_pair.c

@@ -870,7 +870,7 @@ GLboolean radeonPairProgram(GLcontext *ctx, struct gl_program *program,
 
 	_mesa_bzero(&s, sizeof(s));
 	s.Ctx = ctx;
-	s.Program = program;
+	s.Program = _mesa_clone_program(ctx, program);
 	s.Handler = handler;
 	s.UserData = userdata;
 	s.Debug = (RADEON_DEBUG & DEBUG_PIXEL) ? GL_TRUE : GL_FALSE;
@@ -904,6 +904,8 @@ GLboolean radeonPairProgram(GLcontext *ctx, struct gl_program *program,
 	_mesa_free(s.ValuePool);
 	_mesa_free(s.ReaderPool);
 
+	_mesa_reference_program(ctx, &s.Program, NULL);
+
 	return !s.Error;
 }