Don't register debug callback on GL when structured-exporting

renderdoc/driver/gl/gl_debug.cpp

@@ -1150,6 +1150,8 @@ void GLReplay::DeleteDebugData()
 
   MakeCurrentReplayContext(&m_ReplayCtx);
 
+  GL.glDebugMessageCallback(NULL, NULL);
+
   if(DebugData.overlayProg)
     drv.glDeleteProgram(DebugData.overlayProg);
 
@@ -1159,6 +1161,8 @@ void GLReplay::DeleteDebugData()
 
   MakeCurrentReplayContext(m_DebugCtx);
 
+  GL.glDebugMessageCallback(NULL, NULL);
+
   ClearPostVSCache();
 
   drv.glDeleteFramebuffers(1, &DebugData.overlayFBO);

renderdoc/driver/gl/gl_driver.cpp

@@ -661,8 +661,6 @@ WrappedOpenGL::WrappedOpenGL(GLPlatform &platform)
   if(RenderDoc::Inst().IsReplayApp())
   {
     m_State = CaptureState::LoadingReplaying;
-
-    RegisterDebugCallback();
   }
   else
   {

renderdoc/driver/gl/gl_replay.cpp

@@ -260,6 +260,8 @@ void GLReplay::SetReplayData(GLWindowingData data)
   if(m_pDriver != NULL)
     m_pDriver->RegisterReplayContext(m_ReplayCtx, NULL, true, true);
 
+  m_pDriver->RegisterDebugCallback();
+
   InitDebugData();
 
   if(!HasDebugContext())